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DTSTART;TZID=America/Los_Angeles:20240913T193000
DTEND;TZID=America/Los_Angeles:20240913T213000
DTSTAMP:20260403T194702
CREATED:20240807T202204Z
LAST-MODIFIED:20240807T202425Z
UID:10001613-1726255800-1726263000@www.ocastronomers.org
SUMMARY:General Meeting – September 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online.\nDue to the newly effective insurance requirements\, we regret that people under 18 are not allowed at Chapman campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from China.\n  \nWhat is the role fungi\n  \n in space exploration?\n  \n \n  \nThe field of space exploration is currently witnessing great developments and increased attention. As we gear up for new missions\, we need to think about the tiny “hitchhikers” we bring along—microbes that come with us\, either as part of our microbiomes or as chosen resources. Just like us\, these microbes are affected by space conditions. So\, understanding how they grow in space is crucial for planning future safe and sustainable missions. \nIn space microbiology\, fungi often don’t get the attention they deserve. They can be a threat to astronauts\, especially under stressful conditions like altered gravity\, radiation\, and exposure to lunar and Martian soil\, where\, for example\, they can develop pathogenicity. However\, fungi can also be incredibly useful. They can produce important products like medical drugs\, metal nanoparticles\, and enzymes. In space\, fungal processes can change and sometimes improve\, leading to cheaper and more efficient production processes. \nThis presentation will explore how fungi can help us in future missions and the risks they pose\, such as infections\, contamination\, or damage to infrastructure. Research in astromycology\, which studies terrestrial fungi in space and space-like environments\, will be key to supporting sustainable\, long-term human presence in space. \n \nMarta Filipa Simões (ORCID ID: 0000-0002-8767-9487) is currently working as an Assistant Professor at the State Key Laboratory of Lunar and Planetary Science (SKLPlanets)\, at Macau University of Science and Technology (MUST)\, in China. She is a microbiologist and has worked with a myriad of microorganisms (mycobacteria\, environmental and clinical bacteria\, mycobacteriophages and filamentous fungi) in several different countries (UK\, Saudi Arabia\, Portugal\, and China). Her research fits within astrobiology and astromycology\, focusing on: fungal ecology and biodiversity in environmental analogues to outer-space conditions\, fungal development under simulated outer-space conditions\, bioprospection and application of filamentous fungi\, and fungal growth containment (in the context of planetary protection) and exploitation to human needs in outer-space similar conditions. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-09/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240809T193000
DTEND;TZID=America/Los_Angeles:20240809T213000
DTSTAMP:20260403T194702
CREATED:20240626T125144Z
LAST-MODIFIED:20240626T125355Z
UID:10001602-1723231800-1723239000@www.ocastronomers.org
SUMMARY:General Meeting – August 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online.\nDue to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Tucson\, AZ.\n  \nThe Dynamic Eclipse Broadcast Initiative\,\n  \nand follow up projects!\n  \n \n  \nThe Dynamic Eclipse Broadcast (DEB) Initiative was a citizen science project for the 2024 total solar eclipse which transited North America on 8 April 2024. Nearly 400 citizen volunteers observed the eclipse with a set of standard equipment from about 70 location both inside and outside the path of totality. During the partial eclipse phases\, each site uploaded a processed solar image at a cadence of 1 per minute to our web page. For those sites located in the path of totality\, the volunteers collected a set of 5 different exposures every 5 seconds and then uploaded this data to our central repository. These coronal images are currently being processed with the goal of measuring the acceleration of coronal plasma in the inner corona. \nThe organization and training of the DEB volunteers\, their experiences on the day of the eclipse\, and the current status of the data analysis will be discussed. In addition\, the DEB Initiative follow-up projects which explore white light solar flares\, variable stars and asteroid observations will be discussed with the aim of inspiring more people to join our volunteer community. \n \nMatt Penn became interested in astronomy when his parents bought a 3″ Newtonian telescope for him while he was in 6th grade. While getting his undergraduate degree in astronomy at Caltech\, Penn did his senior research project using solar oscillations data and began a career in solar physics research. After getting his PhD from the University of Hawaii in 1992\, Penn worked with dozens of students\, published more than 70 peer-reviewed research papers and developed a citizen science project for the 2017 total solar eclipse. Leaving the research field in 2018\, Penn stayed with his family in Tucson AZ and is currently an electro-optical engineer. He holds two patents in the field of image processing. Penn continues to publish research papers in the field of astronomy as a hobby\, and enjoys hiking and travel. \n  \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-08/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240712T193000
DTEND;TZID=America/Los_Angeles:20240712T213000
DTSTAMP:20260403T194702
CREATED:20240517T201120Z
LAST-MODIFIED:20240518T172519Z
UID:10001595-1720812600-1720819800@www.ocastronomers.org
SUMMARY:General Meeting – July 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online.\nDue to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Chicago.\n  \nWhat Cleaning the\n  \nInternational Space Station\n  \nCan Teach Us About a\n  \nHuman Health Crisis on Earth\n  \n \n  \nThe spread of antimicrobial resistance depends on many factors\, including previous exposure of microorganisms to antimicrobial disinfectants. Antimicrobial resistance in the environment ultimately translates into a human health risk. While antimicrobial chemical disinfection is used to prevent infection by pathogenic organisms\, it can inadvertently select for antimicrobial resistance. Disinfectants are not only used in hospitals and homes on Earth\, but also on the International Space Station (ISS). \nTo protect crew health\, cleaning the ISS primarily using a disinfectant containing the quaternary ammonium compound benzalkonium chloride (BAC) has been done for decades. BAC is not only found in disinfectants\, but a range of products from consumer antibacterial hand soap to dryer sheets. Due to its widespread use\, BAC has been detected throughout the indoor and natural environment\, where it has been linked to antimicrobial resistance. BAC use on Earth has increased dramatically in the past few years\, so findings on the ISS may also be indicative of changes in our Earth-based indoor microbiomes. To investigate the relationship between BAC disinfectant use and antimicrobial resistance\, Staphylococcus spp. isolates collected between 2009 and 2015 from the ISS were examined. Whole genome sequencing identified multiple BAC resistance genes in addition to resistance to other compounds. \nThis work highlights the importance of considering the long-term impact of antimicrobial disinfection when selecting cleaning products. Additionally\, the benefits of specific products to human health must be weighed against their ability to select for resistance and the long-term risk that then emerges. Examining a range of Staphylococcus spp. isolates for resistance markers has given us a greater understanding of how tolerance varies with specific BAC genes in the indoor environment. Additionally\, the ISS environment and long-term BAC disinfection seems to select for BAC tolerance. Further work is needed to understand if there are differences between the frequency of BAC resistance genes in the ISS compared to Earth-based environments. \nhere are links to a formal research paper about resistance on the International Space Station written by a previous lab member (for those interested in scientific journal style writing on this topic)\, and a more informal op-ed on use of cleaning chemicals and its relationship to antibiotic resistance. \n  \n \n  \nOlivia is an environmental engineer interested in fundamental rules that govern how microbes adapt to their environment. She received her Bachelor’s degree in Civil and Environmental Engineering from University of Maryland\, College Park where her research focused on optimizing developments to minimize stormwater flooding. She then moved to England to study in the Environmental Engineering Master’s degree program at Imperial College London. Her dissertation focused on barriers to the implementation of novel microbial wastewater treatment in Serbia. After completing her Master’s\, she spent a year working in industry as a consultant engineer for drinking water projects before returning to academia. Olivia recently completed her PhD in Environmental Engineering at Northwestern University in the Hartmann Lab where her research focused on how disinfectant use impacts antimicrobial resistance and strategies to combat the resistance trend. \n  \n  \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-07/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240614T193000
DTEND;TZID=America/Los_Angeles:20240614T213000
DTSTAMP:20260403T194702
CREATED:20240510T190914Z
LAST-MODIFIED:20240510T190914Z
UID:10001477-1718393400-1718400600@www.ocastronomers.org
SUMMARY:General Meeting – June 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online.\nDue to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Washington\, DC.\n\n  \n  \nExtreme Astronomy\n  \n \n\n  \nThis program examines telescopes\, space travel\, planets\, moons\, mountains\, stars\, galaxies\, clusters\, and black holes in the quest to find the largest\, highest\, closest\, furthest\, hottest\, coldest\, most massive\, brightest\, and darkest among these various objects and also many firsts among astronomical discoveries and accomplishments. \n \n  \nCharles E. Allen III (“Chuck”) \nChuck is current League Vice-President and a past League President (1998-2002). A League Lifetime Member\, he founded the National Young Astronomer Award in 1991\, received the G. R. Wright Award for service in 1998\, holds the League’s Master Outreach Award with over 550 public programs to his credit\, and earned the League’s master observer gold progression with 43 observing programs completed. He co-chaired ALCon ’21 Virtual and currently coordinates three League Observing Programs. Chuck is past-president of the Louisville Astronomical Society and current Program Director of the Evansville Astronomical Society. He is a past judge for the Intel (now Regeneron) International Science and Engineering Fair and served as a United State Air Force officer before entering the practice of law. He’s been an amateur astronomer since age 7. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-06/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240510T193000
DTEND;TZID=America/Los_Angeles:20240510T213000
DTSTAMP:20260403T194702
CREATED:20240422T140226Z
LAST-MODIFIED:20240422T140802Z
UID:10001476-1715369400-1715376600@www.ocastronomers.org
SUMMARY:General Meeting – May 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online.\nDue to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Washington\, DC.\n\n  \n  \nData Driven Discovery\n\n  \nIn Evolving Planetary Systems\n\n  \nA Mineral Informatics Approach\n  \n\n  \n  \nThe key to answering many compelling and complex questions in Earth\, planetary\, and life science lies in breaking down the barriers between scientific fields and harnessing the integrated\, multi-disciplinary power of their respective data resources. We have a unique opportunity to integrate large and rapidly expanding data resources\, to enlist powerful analytical and visualization methods\, and to answer multi-disciplinary questions that cannot be addressed by one field alone. \nRapidly expanding mineral data resources have created an opportunity to characterize changes in near-surface mineralogy through deep time and to relate these findings to the geologic and biologic evolution of our planet over the past 4.5 billion years. Data-driven studies employing advanced analytical and visualization techniques such as mineral ecology\, network analysis\, and association analysis\, allow us to begin tackling big questions in Earth\, planetary\, and biosciences\, including those related to (1) the relationships of mineral formation and preservation with large-scale geologic processes\, such supercontinent assembly\, the oxidation of Earth’s atmosphere\, and changes in ocean chemistry. (2) The abundance and likely species of as-yet undiscovered mineral\, as well as the probability of finding a mineral or mineral assemblage at any locality on Earth or another planetary body. (3) Exploring the possibility that Earth’s mineral diversity and distribution is a biosignature. (4) Characterizing the origins of all mineral species through the development of the Evolutionary System of Mineralogy – a system that will provide a framework for predicting the formational conditions of mineral species of unknown origin. (5) Lastly\, integrating across disciplines and exploring ideas that one field alone cannot fully characterize (e.g.\, how the geochemical makeup of our planet affected the emergence and evolution of life\, and\, likewise\, how life influenced chemical composition and geological processes throughout Earth history). \n \nShaunna M. Morrison is a mineralogist and planetary scientist with expertise in crystallography\, crystal chemistry\, and the application of data driven techniques. Morrison is the 4D (Deep Time Data Driven Discovery) Initiative Co-Director at the Carnegie Institution for Science’s Earth and Planets Laboratory\, former Project Manager of the Carnegie led Deep-Time Data Infrastructure (DTDI)\, a Co-Investigator of the CheMin X-ray diffraction instrument on the NASA Mars Science Laboratory (MSL) mission\, a collaborator on the NASA Astrobiology ENIGMA Project\, a Co-Investigator of the NASA Astromaterials Data System\, and a data contributor and collaborator of the RRUFF Project\, including the Mineral Evolution Database (MED)\, and the Evolutionary System of Mineralogy Database (ESMD). Morrison builds on her technical and theoretical background in crystallography\, crystal chemistry\, and martian mineralogy\, to explore new techniques in multidimensional\, multivariate analysis and visualization by employing a range of advanced analytics and machine learning techniques to better understand the complex relationships among Earth and planetary materials\, their formational environments through deep time\, and their coevolution with the biosphere\, including identifying and characterizing mineralogical signs of life. \n  \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-05/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240412T193000
DTEND;TZID=America/Los_Angeles:20240412T213000
DTSTAMP:20260403T194702
CREATED:20240112T160319Z
LAST-MODIFIED:20240325T153205Z
UID:10001401-1712950200-1712957400@www.ocastronomers.org
SUMMARY:General Meeting – April 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online.\n\n  \n  \nHow to Work Amateur Satellites\n  \nwith Your Handheld Radio\n\n  \n \n  \nYou do not need 100W of transmit power nor expensive antenna arrays to work the FM voice amateur satellites! Many hams already have the necessary equipment to “work the birds.” This presentation will walk you through ALL the steps needed to successfully work several ham satellites – including the International Space Station. \n  \nClint K6LCS has been a ham since 1994\, and found his niche in the hobby: working amateur satellites with minimal equipment and telling ALL about it! He has served a liaison between NASA\, the ARISS team\, and schools coordinating amateur radio contacts between the International Space Station and students (and also orchestrated a wildly successful ARISS contact). Audiences have never found his presentation slides “wordy” nor dull. Trivia questions are included throughout the session – audiences are never bored. \nFor reference materials\, Clint has created a support Web site at work-sat.com. The Web site has become a one-stop source for ALL the citations and equipment recommendations and software suggestions made in the presentation. \nProfessionally\, Clint was sales manager for ADI / Premier Communications / Pryme\, worked for a Motorola commercial two-way dealer a couple of years\, and for Ham Radio Outlet a couple more. He resides in Jurupa Valley\, California\, with his wife\, Karen\, and their new addition to the family: Huck\, a two-year-old 75-pound Lab. \n  \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-04/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240308T193000
DTEND;TZID=America/Los_Angeles:20240308T213000
DTSTAMP:20260403T194702
CREATED:20240203T183604Z
LAST-MODIFIED:20240203T203924Z
UID:10001412-1709926200-1709933400@www.ocastronomers.org
SUMMARY:General Meeting – March 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online.\nDue to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Waterloo\, Canada.\n\n  \n  \nCosmic Mirages: Seeing Dark Matter\n  \nwith Gravitational Lenses\n\n\n\n\n  \n \n  \n  \nMost of the matter in the Universe is dark matter: an elusive particle that is completely invisible. But we can “see” this matter by studying how it distorts the light from galaxies in the distant Universe\, a phenomenon called gravitational lensing. I will give a whirlwind tour of gravitational lensing’s “greatest hits” showing how it can be used as a tool to understand some of the most mysterious things in the Universe: from black holes to the “cosmic web” of dark matter that links galaxies together. \n  \n \n  \nMike Hudson received his Ph.D. from the Institute of Astronomy\, University of Cambridge in 1993 where studied the expansion of the Universe. He did post-doctoral research work at Durham University and at the University of Victoria in Canada\, where he was a National Fellow of the Canadian Institute of Theoretical Astrophysics.  In 1999\, he moved to the University of Waterloo\, where he is currently Professor. His scientific interests include the nature of dark matter and dark energy\, how the Universe expands\, and how galaxies form and evolve.  He can be found on Twitter as @MikeHudsonAstro \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-03/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240216T193000
DTEND;TZID=America/Los_Angeles:20240216T213000
DTSTAMP:20260403T194702
CREATED:20240112T074306Z
LAST-MODIFIED:20240112T074306Z
UID:10001400-1708111800-1708119000@www.ocastronomers.org
SUMMARY:General Meeting – February 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Connecticut.\n\n  \n  \nThe Wild West of Star Formation\n\n  \n  \n \n  \nTonight we saddle up to explore the extreme center of our Milky Way galaxy – a chaotic region containing dense gas\, stars\, and a supermassive black hole. The normal rules for star formation don’t seem to apply here and scientists are chasing down these law-breaking clouds in our Galaxy’s Center. We will explore a multi-wavelength perspective of our Galaxy’s Center and what fuels this extreme region. By understanding what is causing the rules of star formation to break down in this region\, we can better understand how stars are born across the cosmos. \n  \n  \n \n  \nCara Battersby is a PhD astrophysicist with a lifelong passion for education and community outreach. She is currently an associate professor of physics at the University of Connecticut where she leads the Milky Way Laboratory. This research group is funded by NSF and NASA and uses our Milky Way as a laboratory to explore physics across the cosmos\, using both large observational surveys and numerical simulations. Dr. Battersby has authored over 70 publications and given over 50 invited research presentations. She has worked with folks at NASA on developing space mission concepts\, is a co-founder of major outreach programs UConn STARs and BiteScis\, and secretly wants to be Carl Sagan when she grows up. She loves being active outdoors (hiking\, climbing\, etc!)\, playing music and spending time with her wonderful family and friends. \n  \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-02/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240112T193000
DTEND;TZID=America/Los_Angeles:20240112T213000
DTSTAMP:20260403T194702
CREATED:20231201T053521Z
LAST-MODIFIED:20231201T054225Z
UID:10001399-1705087800-1705095000@www.ocastronomers.org
SUMMARY:General Meeting – January 2024
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present inperson from the Chapman University’s campus.\n\n  \n  \nThe [2nd] Great North American\n  \n  \nSolar Eclipse\n  \n  \n \n  \nFor the second time in just under seven years\, the United States will experience another total solar eclipse (TSE) — the first such occultation since the total solar eclipse of August 21\, 2017\, which traced a path from the Oregon coastline to Charleston\, South Carolina\, observed by nearly 215 million people. On April 8th of next year\, another TSE will be seen (weather cooperating) in the continental U.S.   This event shall be the last such eclipse visible in the domestically\, until August 23\, 2044\, followed by another TSE on August 12\, 2045. \nLike the 2017 event\, many large cities lie in the path of totality — chief among them being San Antonio\, Dallas-Fort Worth\, Austin\, and Waco\, TX\, as well as Indianapolis\, IN\, Cleveland\, OH\, and Buffalo and Rochester\, NY. \nThe presentation shall focus on the overall circumstances of the April 8th eclipse\, synoptic weather prospects for selected observation venues\, as well as providing some helpful suggestions regarding preparations for those interested in attempting to view totality. \n  \n  \n \nProfessor Joel Harris has been traveling throughout the world to observe solar eclipses since 1973 — totaling 50 years of eclipse chasing\, encompassing some 22 total eclipse events\, and having spent over an hour within the lunar umbra. \nHis first eclipse experience was as part of a scientific team supporting the noted American solar astronomer\, Dr. Donald Menzel of Harvard Observatory\, in the Mauritanian Sahara Desert in 1973. \nProfessor Harris spent 17 years in the defense and aerospace industries as a senior systems engineer\, having earned both his bachelor’s degree in electrical/electronic engineering\, and his master’s in systems engineering. \nHe has been awarded the NASA Group Achievement Award for his public relations work as project information officer supporting the Galileo Project at Jet Propulsion Laboratory from 1982 – 1986\, and was elected a Fellow of the Royal Astronomical Society in 2018. \nHarris currently lives in Newbury Park\, CA\, with his wife of 23 years\, Patti\, their rescue dogs Bailey and Sadie\, and his “B flat Grey Tabby” cat\, Miranda. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2024-01/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231208T193000
DTEND;TZID=America/Los_Angeles:20231208T213000
DTSTAMP:20260403T194702
CREATED:20231105T221038Z
LAST-MODIFIED:20231105T221645Z
UID:10001339-1702063800-1702071000@www.ocastronomers.org
SUMMARY:General Meeting – December 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present inperson from the Chapman University’s campus.\n\n  \n  \nBrave New Worlds\n  \n  \n \n  \nThirty years ago\, the astronomical world finally had an answer to one of the most profound questions humanity has ever asked: do the distant stars have worlds of their own? In the last three decades\, we have gone from a handful of initial discoveries to an avalanche of information. Internationally published science illustrator and long time OCA member Chris Butler will bring it all together and offer his perspective of where we stand now\, and what the implications are of all these brave new worlds. \n  \n \n  \nChris Butler is an internationally published science and nature artist best known for his work on astronomical subjects and for his work as a science speaker and educator.  Chris is the senior artist and animator for the Griffith Observatory in Los Angeles\, where he has been involved in public program production and exhibit design for 26 years.  Chris has been a member of the Orange County Astronomers since 1984\, and has served as Vice President and a member of the Board. Chris holds memberships in numerous other astronomical organizations\, is a Fellow of the Royal Astronomical Society\, and was honored to have an asteroid named after him by the International Astronomical Union. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-12/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231110T193000
DTEND;TZID=America/Los_Angeles:20231110T213000
DTSTAMP:20260403T194702
CREATED:20231023T205929Z
LAST-MODIFIED:20231111T042103Z
UID:10001338-1699644600-1699651800@www.ocastronomers.org
SUMMARY:General Meeting – November 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present inperson from the Chapman University’s campus.\n\n  \n  \nRACING WITH THE MOON\n\n  \nDANCING WITH THE STARS\n  \n  \n  \nIn RACING WITH THE MOON / DANCING WITH THE STARS. Richard Lederer\, Ph.D.\, will share the etymology of words and phrases derived from our moon sun\, galaxy and the stars. He’ll also welcome your questions about the English language — puns to punctuation\, pronouns to pronunciation\, and palaver to palindromes. \n \nSan Diego Union-Tribune language columnist Richard Lederer\, Ph.D.\, is the author of 60 books about language\, history\, and humor\, including his best-selling Anguished English series and his current title\, Lederer’s Language & Laughter. \nHe is a founding co-host of “A Way With Words\,” broadcast on Public Radio. \nDr. Lederer has been named International Punster of the Year and Toastmasters International’s Golden Gavel winner. \nThere will be a book signing after the event. \nYou can find the list of books authored by Dr. Lederer along with instructions for ordering\, here: RichardLedererBookList \nYou can find the text of the talk here: RichardLedererMoonAndStars \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-11/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231013T193000
DTEND;TZID=America/Los_Angeles:20231013T213000
DTSTAMP:20260403T194702
CREATED:20230823T115935Z
LAST-MODIFIED:20230823T115935Z
UID:10001337-1697225400-1697232600@www.ocastronomers.org
SUMMARY:General Meeting – October 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Flagstaff\, Arizona.\n\n  \n  \nThe Discovery of Pluto\n  \n \n  \n  \nThe search for\, and eventual discovery of\, Pluto is a colorful tale of dedication\, perseverance. and personal triumph. It was a real needle-in-haystack effort that is as much about the human spirit as it is scientific pursuits. \n \n  \nKevin Schindler is the historian at Lowell Observatory – where he has worked for 28 years – and an active member of the Flagstaff history and science communities. He has written more than 600 magazine and newspaper articles on subjects ranging from local history and astronomy to baseball and the Lincoln Memorial\, and contributes a bi-weekly astronomy column\, “View from Mars Hill”\, for the Arizona Daily Sun newspaper. He has written seven books\, including Historic Tales of Flagstaff (written with Mike Kitt). Fun fact: Kevin has both a fossil crab and asteroid named after him. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-10/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230908T193000
DTEND;TZID=America/Los_Angeles:20230908T213000
DTSTAMP:20260403T194702
CREATED:20230808T194218Z
LAST-MODIFIED:20230808T201407Z
UID:10001334-1694201400-1694208600@www.ocastronomers.org
SUMMARY:General Meeting – September 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present inperson on the campus of Chapman University.\n\n  \n  \n  \nTHE SHAKING COSMOS:\n  \n  \nObserving the Universe in\n  \n  \nGravitational Waves with LISA\n  \n \nVirtually everything we know about the Universe has been discovered from the study of photons — light in all its myriad forms from radio waves\, to visible light\, to x-rays and beyond.  At the dawn of the 21st century\, advanced technology is providing access to the Cosmos through detection of sub-atomic particles like cosmic rays and neutrinos\, and through detection of ripples in the fabric of spacetime itself. \nThese ripples in spacetime\, called gravitational waves\, carry information not in the form of light or particles\, but in the form of gravity itself.  Gravitational waves are messengers which carry the stories of what happens when two black holes collide at the centers of galaxies\, of how the compact stars fall into monstrous black holes\, and of how the graveyard of the galaxy is filled with the quiet whisper of binary white dwarf stars that spiral together ever so slowly as they fade into oblivion. \n \nThis talk will explore the modern description of gravity\, what gravitational waves are and how we hope to measure them\, and what we hope to learn from their detection. We’ll focus on the forthcoming space gravitational wave observatory\, LISA\, being launched in the early 2030s by ESA and NASA. Gravity has a story to tell\, and in this talk\, we’ll explore some of discoveries we hope to make by listening. \n \nShane Larson is a research professor of physics at Northwestern University\, where he is the Associate Director of CIERA (Center for Interdisciplinary Exploration and Research in Astrophysics). He works in the field of gravitational wave astrophysics\, specializing in studies of compact stars\, binaries\, and the galaxy.  He works in gravitational wave astronomy with both the ground-based LIGO project\, and future space-based observatory LISA. He was formerly a tenured associate professor of physics at Utah State University. He is an award winning teacher\, and a Fellow of the American Physical Society. He contributes regularly to a public science blog at writescience.wordpress.com\, and tweets with the handle @sciencejedi \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-09/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230811T193000
DTEND;TZID=America/Los_Angeles:20230811T213000
DTSTAMP:20260403T194702
CREATED:20230625T142320Z
LAST-MODIFIED:20230625T144518Z
UID:10001327-1691782200-1691789400@www.ocastronomers.org
SUMMARY:General Meeting – August 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present online from Heidelberg\, Germany.\n\n  \n  \n  \nA Journey Through Binary Black Holes\n  \n \n  \nThe zoo of binary black holes has never been so rich. Before the first LIGO-Virgo detection of gravitational waves in 2015\, we could only speculate about the existence of binary black holes\, i.e. systems composed of two black holes orbiting about each other. Now\, the number of detected binary black holes approaches the 100 mark\, and we expect many new discoveries in the next few months. The mass of the black holes observed by LIGO and Virgo ranges from a few up to a few hundred times the mass of our Sun. Some of them are relatively nearby\, others merged several Billion years ago and their gravitational wave signal reached us from far away. In this talk\, we will explore the main properties of binary black holes and discuss their main formation channels and open questions. \n\n\n\n  \nMichela Mapelli obtained her PhD in Astrophysics from the International School for Advanced Studies (SISSA/ISAS\, Trieste\, Italy) in 2006. She then moved to Zurich (Switzerland) for a postdoctoral fellowship. In 2010\, she got a permanent research position at the Italian National Institute for Astrophysics (INAF)\, where she built her first research group focused on the study of black holes of different sizes. After holding a professorship at the University of Innsbruck (Austria\, 2017-2018) and Padova (Italy\, 2018-2023)\, she recently became Full Professor of Computational Physics at the University of Heidelberg (Germany). During her career\, she obtained several prizes for her research on black holes\, including the MERAC Prize 2015 for the Best Early Career Researcher in Theoretical Astrophysics and a Consolidator Grant of the European Research Council. In 2009\, several years before the first gravitational-wave detection\, she proposed the formation of black holes with mass about 30-50 times the mass of our Sun. She is now an enthusiastic member of the LIGO-Virgo-KAGRA collaboration and is planning for the next-generation gravitational-wave detectors. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-08/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230714T193000
DTEND;TZID=America/Los_Angeles:20230714T213000
DTSTAMP:20260403T194702
CREATED:20230611T142113Z
LAST-MODIFIED:20230612T050010Z
UID:10001326-1689363000-1689370200@www.ocastronomers.org
SUMMARY:General Meeting – July 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\nThis meeting’s speaker will present inperson on the campus of Chapman University.\n\n  \n  \n  \nTips and Secrets on Planetary Imaging\n  \n  \nThis talk will discuss the preparation\, imaging capture and processing for Planetary Imaging. \n \nChristopher Go lives on the island of Cebu in the Philippines. He has been an amateur astronomer since 1986\, the year of the return of Halley’s Comet. He studied at the University of San Carlos where he received a BS in physics. \nStarting as an amateur astronomer with a pair of 10×40 binoculars\, Chritopher Go would later own several different telescopes. He currently uses a Celestron C14 for planetary imaging. \nChris’s main astronomical interests are planetary imaging\, particularly of Jupiter and Saturn. \nIn February 2006\, Christopher Go discovered that the white spot Oval BA of Jupiter (later called Red Spot Jr.) had turned red. He joined planetary scientists Imke de Pater and Phil Marcus to observe Jupiter in the spring of 2006 with the Hubble Space Telescope. He was also involved with follow-up Hubble and Keck telescope observations of Jupiter. \nIn 2008\, he received the Association of Lunar and Planetary Observers’ prestigious Walter Haas Award. In June 3\, 2010\, he confirmed the Jupiter Impact that was observed by Anthony Wesley. Asteroid 2000 EL157 has been named 30100Christophergo\, in his honour. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-07/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230609T193000
DTEND;TZID=America/Los_Angeles:20230609T213000
DTSTAMP:20260403T194702
CREATED:20230506T190616Z
LAST-MODIFIED:20230523T133133Z
UID:10001311-1686339000-1686346200@www.ocastronomers.org
SUMMARY:General Meeting – June 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\n\n  \n  \n  \nThrowing DART(s) at Asteroids\n  \n  \nNASA’s First Planetary Defense Mission\n  \n \n  \nOn September 26\, 2022\, NASA intentionally smashed the DART spacecraft into an asteroid as humanity’s first test mission for planetary defense. The Double Asteroid Redirection Test (DART) spacecraft’s collision with its target asteroid\, which poses no threat to Earth\, changed the asteroid’s motion in a way that can be measured using ground-based telescopes\, including those of Las Cumbres Observatory. \n\nIn this talk\, Dr. Tim Lister will describe near-Earth asteroids\, impact hazards\, and what the DART mission will do to prepare for potentially deflecting asteroids in the future. \n  \n  \nDr Tim Lister joined Las Cumbres Observatory (LCO) as a project scientist in 2007 and is now a Staff Scientist. He specializes in the observation and characterization of small Solar System bodies\, particularly comets and Near Earth Asteroids. He received a M. Sci in Astrophysics from the University of St Andrews in 1997 and a Doctorate in Astrophysics on the study of magnetic activity on variable stars in 2000\, also from the University of St Andrews. Following his doctorate\, he was a founding member of the\nSuperWASP transit survey searching for extrasolar planets\, specializing in building data processing pipelines for analyzing the survey data\, for which he received the RAS Group Achievement Award. Since joining LCO\, he has worked on building pipelines and data archives for the observatory\, confirming new transiting extrasolar planets and building a new science group for the study of Solar System objects. In the course of this research\, he has developed web-based software to allow the scheduling and analysis of observations of Solar System objects using the telescopes of the LCO Network. He is currently Co-lead of the LCO Outbursting Objects Key (LOOK) Project to study the behavior of comets for ESA’s Comet Interceptor mission and a member of NASA’s Double Asteroid Redirection Test (DART) Investigation Team. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-06/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230512T193000
DTEND;TZID=America/Los_Angeles:20230512T213000
DTSTAMP:20260403T194702
CREATED:20230317T103831Z
LAST-MODIFIED:20230317T120016Z
UID:10001309-1683919800-1683927000@www.ocastronomers.org
SUMMARY:General Meeting – May 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\n\n  \n  \n  \nThe Mystery Behind the Origin of\n  \n  \nRadio Filaments in our Milky Way Galaxy\n  \n  \n \n  \nThe Galactic center is an active region of our Milky Way Galaxy. There is a supermassive black hole at the center of the Galaxy.\nBeyond its sphere of influence\, there is a rich environment revealing relic of past activities of the black hole.\nAs part of an international team\, observations with the new South African MeerKAT observatory has discovered hundreds of\nmagnetized thread-like filaments in the inner 1000 light years of the region surrounding the black hole at the Galactic center. These filaments appear\nharp-like\, commentary tail-like\, or loop-like structures. After a brief history of the discovery of radio filaments in\nthe 80’s\, the nature and origin of these structures will be discussed with an emphasis of why it is so puzzling\nto understand their origin. \n  \n \nF. Zadeh received his PhD in Astronomy from Columbia University in 1986 before he went to NASA/Goddard Space Flight center as a National Research Council postdoc. He then joined the department of physics and astronomy at Northwestern University in 1989 and has been there since. His research interests are the black hole at the center of the Galaxy\, star formation and cosmic-ray physics. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-05/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230414T193000
DTEND;TZID=America/Los_Angeles:20230414T213000
DTSTAMP:20260403T194702
CREATED:20230129T101329Z
LAST-MODIFIED:20230129T101329Z
UID:10001286-1681500600-1681507800@www.ocastronomers.org
SUMMARY:General Meeting – April 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\n\n  \n  \n  \nObserving the universe in the Ultraviolet\n  \n \n  \n  \nProf. Hamden is a telescope builder\, with a focus on UV astronomy and developing new detector technology. She will describe why the UV is so interesting scientifically and why is it criminally understudied. She will also discuss her own work on several different UV missions in development\, including FIREBall-2 and Aspera. \n  \n \n  \nDr. Erika Hamden is a professor of astrophysics at the University of Arizona. She specializes in building telescopes that go into space and the stratosphere\, and developing technology to make telescopes better. Erika is a leader in the field of space astrophysics\, and has developed programs to teach early career scientists how to develop their own space missions. She is the deputy principal investigator of Aspera\, a NASA orbiting telescope in development. She is a former chef\, a TED Fellow\, a AAAS If/then Ambassador\, an aspiring astronaut\, and is working on her pilots license. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-04/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230310T193000
DTEND;TZID=America/Los_Angeles:20230310T213000
DTSTAMP:20260403T194702
CREATED:20230129T115155Z
LAST-MODIFIED:20230131T200544Z
UID:10001288-1678476600-1678483800@www.ocastronomers.org
SUMMARY:General Meeting – March 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\n\n  \n  \n  \nHunting Isolated Black Holes\n  \n  \n \n  \nBlack holes are fascinating\, but enigmatic celestial objects.  Long predicted by theory\, as the product of some of the most energetic events in the universe\, they have always presented severe challenges to observational astronomers.  If the have a binary companion\, accretion or the gravitational waves released during a merger can reveal their presence\, but isolated black holes offer no such signatures.  Yet understanding the Milky Way’s population of stellar remnants – both isolated and binary – will place important constraints on models of stellar evolution.  The phenomenon of microlensing provides the means to   detect massive objects\, even when they emit no light at all.  Modern surveys are capable of detecting these transient events across a huge swathe of the Galaxy\, and will chart the population of stellar remnants in the Milky Way.  This talk will explore how black holes fit into our understanding of the lives of massive stars\, how microlensing can reveal even singleton stellar remnants\, and describe how recent work has confirmed the first such discovery. \nMore on microlensing: http://www.microlensing-source.org/ \n  \n  \n \nDr. Rachel Street completed her Ph.D. at the University of St. Andrews in Scotland\, where her thesis focused on searching for exoplanets in open clusters.  This work led to her first post-doctoral position at Queen’s University Belfast\, Northern Ireland\, where she was a founder member of the SuperWASP transit survey\, for which she received the RAS Group Achievement Award and a PPARC Postdoctoral Fellowship.  Rachel considers herself fortunate to have joined Las Cumbres Observatory (LCO)\, soon after it was founded\, giving her the opportunity to watch the LCO Telescope Network develop into full operation.  Rachel started to study first exoplanets and later stellar remnants through the phenomenon of microlensing using LCO’s telescopes\, and she now leads the LCO Microlensing group as a Senior Scientist.  Rachel recently stepped down as a co-chair of the Rubin Observatory Transients and Variable Stars Science Collaboration\, which aims to prepare for groundbreaking science with the Legacy Survey of Space and Time. \n  \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-03/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230217T193000
DTEND;TZID=America/Los_Angeles:20230217T213000
DTSTAMP:20260403T194702
CREATED:20230129T052328Z
LAST-MODIFIED:20230129T052423Z
UID:10001282-1676662200-1676669400@www.ocastronomers.org
SUMMARY:General Meeting – February 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\n\n  \n  \n  \nPuzzles in Galaxy Evolution\n  \n  \n  \n \nI will describe a pair of sharp puzzles suggesting a possible mismatch between our theory of galaxy evolution and recent observations from the James Webb Space Telescope (JWST). First\, current models predict that most distant galaxies found by JWST should be seen at a time when they are transitioning from the initial assembly of their ingredients to the later processes by which they form stars\, and other structures we recognize as a galaxy.  Instead\, fully-formed\, massive galaxies appear to exist impossibly early\, before their ingredients should even have been able to assemble.  Second\, a possible explanation for this would be that most galaxies grow very differently from the processes we have observed in star-forming regions of our own Milky Way.  I will discuss whether such a difference might be able to reconcile both problems\, or whether something is still “broken”. \n \nCharles Steinhardt is an associate professor at the Cosmic Dawn Center and University of Copenhagen\, having previously spent time at Caltech\, Kavli IPMU\, Harvard\, and Princeton.  His research is inspired by astrophysical phenomena whose explanation has been cast into doubt\, either by new theoretical ideas or new observations.  Recently\, this includes several different areas of astronomy and astrophysics\, including galaxy evolution\, black hole accretion\, and gamma-ray bursts.  Recent work also includes developing machine learning and statistical methods for making full use of the large datasets modern astronomy produces.  He also runs a summer undergraduate research program that brings American students to Copenhagen each summer. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-02/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230113T193000
DTEND;TZID=America/Los_Angeles:20230113T213000
DTSTAMP:20260403T194702
CREATED:20221017T201556Z
LAST-MODIFIED:20221222T181255Z
UID:10001268-1673638200-1673645400@www.ocastronomers.org
SUMMARY:General Meeting – January 2023
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\n Join Zoom\n\n\n  \n  \n  \nCOSMIC ARTIST:\n\n\n  \n  \nTHE WORK OF JON LOMBERG\n  \n  \n  \n \n  \n  \n\nArtist Jon Lomberg will talk about his long career working with Carl Sagan on projects like the Voyager Golden Record\, the TV series COSMOS\, and the movie CONTACT. He will also discuss work with Mauna Kea observatories and his creation of the Galaxy Garden\, the worlds first scale model\, walk through galaxy.\n\n  \n \n  \n\nJo Lomberg is one of the world’s most distinguished space artists. He was Designer of the Voyager Golden Record and Emmy-Award winning Chief Artist of Carl Sagan’s COSMOS series. He is a winner of the ASP’s Klumpke Roberts Award for astronomy popularization and has an asteroid named after him. He lives in Kona\, Hawaii.\n\n\n\n\nwww.jonlomberg.com\nwww.galaxygarden.net\n\n\n\nSpecial Offer\nJon is offering two of his best-known pieces with Carl Sagan\, one from COSMOS and one from CONTACT at a special price of $60 (+$15 shipping) each. You can see the details of each by clicking on the respective words. These prints can be ordered directly from Jon at this special members price. Do not order through the website but send payment via PayPal to lomberg@aloha.net\n\nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2023-01/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221209T193000
DTEND;TZID=America/Los_Angeles:20221209T210000
DTSTAMP:20260403T194702
CREATED:20221017T193704Z
LAST-MODIFIED:20221207T131036Z
UID:10001267-1670614200-1670619600@www.ocastronomers.org
SUMMARY:General Meeting – December 2022
DESCRIPTION:This is a free and open to the public hybrid event\, held both inperson and online. Due to the newly effective insurance requirements\, we regret that we can not allow people under 18 on the Chapman Campus\, they are welcome to attend online.\nJoin Zoom\nThe meeting is held at the Irvine Lecture Hall of the Chapman University\, the exact street address can be found on the section above under “VENUE”. \n  \n  \nThe Voyager Spacecraft\n  \n  \nWhere they are\, how they got there\,\n\n  \nand where they are going\n  \n \nTwin Voyager spacecraft were launched in the summer of 1977 on a four-year mission to study Jupiter\, Saturn and their natural satellites. A fortuitous option existed for one of them to continue on to Uranus five years later and Neptune after another three years. Space missions at the time were typically of days to months duration\, and technology for even a four-year mission was considered pushing the limits of technology. A 12-year mission was seen as a pipe dream. But the Voyagers were outfitted with some new innovations\, and techniques were developed in flight to make enhanced science possible at Uranus and Neptune if they should survive that long. The only thought given to a purpose beyond Neptune was in the form of a video record of sounds\, music and greetings from the people of Earth to any intelligent beings that might happen upon the derelict remains of either craft somewhere in the cosmos. As the world has seen\, expectations were exceeded beyond anyone’s imagination. The spacecraft are still operating well\, with data being transmitted continuously and received daily. \nThis talk is intended to focus on the spacecraft technologies and highly creative techniques developed in flight\, in the hands of a dedicated flight team\, that allowed these intrepid explorers to extend their four-year prime mission to 45 years now\, with the expectation of another possible five to ten years before they finally succumb to the inevitable loss of enough electrical power to keep them running. \n \nTim Hogle became hooked on astronomy at age 12 after building a 3″ Newtonian telescope and seeing Saturn with it in the dark skies of his front yard. These interests\, astronomy and telescope making\, have stayed with him ever since. After graduating in electrical engineering from Cal Poly San Luis Obispo in 1971\, he joined the Navy Air Corps as a Naval Flight Officer for a few years\, then left the Navy and serendipitously joined JPL and the Voyager flight team shortly after their launches; a dream opportunity to explore the solar system in a detail he never could through a telescope. This was so much fun that he accepted an offer to continue with the team to explore Uranus and Neptune.\nStarting as a real time analyst\, seeing the data coming in before anyone else saw it\, he soon became the senior spacecraft systems engineer\, responsible for a wide variety of duties including data and anomaly analysis\, sequence\, test\, and contingency planning\, and being involved in nearly all aspects of the mission. By the Neptune encounter\, the Voyagers were as close as family members to him\, and Tim wanted to continue using his years of experience to extend the mission as long as possible. His total time with Voyager was 27½ years. He has been retired since 2006\, but kept in touch with former colleagues on the flight team to keep abreast of the progress of the Voyagers in his absence. In retirement\, his astronomical interest has continued with visual observing at every opportunity\, especially of faint galaxies through an 18″ telescope. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-2022-12/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20200214T193000
DTEND;TZID=America/Los_Angeles:20200214T213000
DTSTAMP:20260403T194702
CREATED:20191224T140421Z
LAST-MODIFIED:20191224T140421Z
UID:10000979-1581708600-1581715800@www.ocastronomers.org
SUMMARY:General Meeting - February 2020
DESCRIPTION:From Apples to Orange Juice: Can We Infer a Galaxy’s Biography from Just One Photograph? \n \nDespite having data stretching back over 10 billion years and computer simulations that make realistic-looking galaxies starting from just gas and dark matter\, humans do not have a theory that predicts why a galaxy looks the way it does based on what it used to look like. We ask this from the biological theory of evolution\, but\, because astronomers cannot experiment on our subjects\, we face challenges biologists (and sociologists) do not. I will talk about the two main routes we are taking to overcome this handicap: (1) assuming our data nevertheless do look like that of biology or sociology and proceeding accordingly; (2) attempting to infer the past histories of individual objects through the single snapshots we actually have of them. The latter is the correct thing to do\, but it is unclear if it is possible\, which would leave astronomers in the unique position of having data…but nothing to do with it! This epistemological situation\, and the opportunity to explore questions like “Is galaxy evolution knowable?” is fascinating to me\, and I think it cannot but lead to important new insights about our place in the universe. \nLouis Abramson \n \nLouis Abramson is a Carnegie-Princeton Fellow at the Carnegie Observatories in Pasadena. He works to tease-out the growth histories of individual galaxies from information encoded in their colors. He hopes that such galaxy biographies will yield insights into what causes some galaxies to look like the Milky way while others do not. Outside of academia\, Louis is an elected official in the City of Los Angeles and chairs the Homelessness and Outreach Committees of the Central Hollywood Neighborhood Council. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-february-2020/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20200110T193000
DTEND;TZID=America/Los_Angeles:20200110T213000
DTSTAMP:20260403T194702
CREATED:20191205T131600Z
LAST-MODIFIED:20191220T210809Z
UID:10000978-1578684600-1578691800@www.ocastronomers.org
SUMMARY:General Meeting - January 2020
DESCRIPTION:Music of the Spheres: Gravitational Waves from Black Holes\n \nThe Nobel prize in 2016 was awarded for the detection of gravitational waves by the LIGO interferometer. So faint are these ripples that the only events powerful enough to produce detectable signals are the collisions of black holes and neutron stars\, some forty times the mass of the sun. I’ll explain how gravitational waves work\, how they are detected and explain some of the weird and interesting properties of black holes. \n \nSimeon Bird\, professor at UCR’s Department of Physics and Astronomy\, earned his Ph.D. from the University of Cambridge and did postdocs at the IAS in Princeton\, Carnegie Mellon and Johns Hopkins. His research interests are in cosmology and galaxy formation. His tool of choice is numerical simulations\, so he is interested in high performance computing\, as well as machine learning. His most notorious work connected the gravitational wave sources of LIGO with the very early universe. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-january-2020/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191213T193000
DTEND;TZID=America/Los_Angeles:20191213T213000
DTSTAMP:20260403T194702
CREATED:20191102T162145Z
LAST-MODIFIED:20191102T162559Z
UID:10000975-1576265400-1576272600@www.ocastronomers.org
SUMMARY:General Meeting - December 2019
DESCRIPTION:Astro-cinematography from the Mount Laguna Observatory\n \nThe stars and galaxies that fill the night sky appear roughly today as they have throughout human history. However\, close inspection shows that these objects change\, sometimes dramatically\, over decades or months\, or occasionally over just minutes. The field of time-domain astronomy has arisen in recent years thanks to technological advances\, and we can now record these changes and reveal celestial mergers\, catastrophic explosions\, and the shadows of distant worlds. In this talk I will discuss our study of the time-variable universe from San Diego State University’s Mount Laguna Observatory including a new\, ultra-wide field imaging system that is beginning to survey the skies. \nRobert Quimby\n \nRobert Quimby is the Director of the Mount Laguna Observatory and an Associate Professor of Astronomy at San Diego State University. He earned his bachelor’s degree in Astrophysics from the University of California\, Berkeley in 1998 and then worked as a research assistant for the Supernova Cosmology Project before entering graduate school. Robert earned his masters and PhD in Astronomy from the University of Texas\, Austin in 2004 and 2006\, respectively. He went on to work as a postdoctoral scholar at Caltech and then at the Kavli Institute for the Physics and Mathematics of the Universe in Japan before joining the faculty at San Diego State University. Robert’s research interests include thermonuclear supernovae\, core-collapse supernovae\, the use of supernovae as cosmological probes\, detection of supernovae in the early universe\, gamma-ray bursts\, and other rare transient phenomena. For his research contributions\, Robert has received the Trumpler Award (Astronomical Society of the Pacific)\, the Hyer Award (American Physical Society)\, and\, a share of the 2015 Breakthrough Prize in Fundamental Physics. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-december-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191108T073000
DTEND;TZID=America/Los_Angeles:20191108T213000
DTSTAMP:20260403T194702
CREATED:20190930T153122Z
LAST-MODIFIED:20190930T153122Z
UID:10000969-1573198200-1573248600@www.ocastronomers.org
SUMMARY:General Meeting - November 2019
DESCRIPTION:OUR LITTLE CORNER OF THE GALAXY – THE EARTHLIGHT EXPRESS\n  \nIn The Earthlight Express\, internationally published science artist Chris Butler brings his popular Our Little Corner of the Galaxy tours of the universe close to home – with an excursion across the wild and majestic wastelands of Earth’s moon.  Join Chris for a unique blend of science and imagination that will transform the distant moon you see in Earth’s sky into what it truly is: a world of its own. \n \nIn The Earthlight Express\, internationally published science artist Chris Butler brings his popular Our Little Corner of the Galaxy tours of the universe close to home – with an excursion across the wild and majestic wastelands of Earth’s moon at some time several centuries hence when such travel may be commonplace.  While earlier episodes of these tours required interstellar probes and spacecraft to visit far-flung destinations in the universe\, The Earthlight Express takes place close to home – which allows us to relax in comfort riding a lunar rail train of the future. \nWhile our method of travel is imaginary\, the places we will be visiting are all quite real.  Indeed\, we will pass through landscapes walked by three of the Apollo moon crews.  Placing ourselves into the scene permits us to appreciate the scope and scale of the places.  We will also be visiting parts of the moon Apollo never reached\, and seeing sights those astronauts never glimpsed\, such as the eerie majesty of the frigid lunar night.  In all\, our path will carry us across more than 2700 miles\, passing through wide valleys\, alongside towering mountains\, across deep crevasses\, and to the sheer lip of a gigantic crater that would hold a dozen large cities. \nChris conceived\, researched\, scripted\, designed\, modeled and edited all elements of the production over a course of four years\, making this the most ambition presentation he has undertaken yet in his 25 years of creating public science education shows. \n \nChris Butler is an internationally renowned artist\, public speaker\, and educational program producer whose work focuses on science\, nature\, and maritime subjects. His illustrations have appeared in thousands of publications worldwide\, from the Times of London to Scientific American. A graduate of California State University Fullerton’s school of Television and Film Production\, Chris has served as an art director and animator on both educational and entertainment programs. \nChris has served as an artist and animator for planetarium and exhibit programs for the Griffith Observatory in Los Angeles for 22 years\, and is a regular lecturer at education venues across the country. Chris’s unique art and presentation style reflects his diverse experience; he has been the director of a children’s science museum\, a tour guide on the original Queen Mary\, a technical illustrator\, a representative for a telescope manufacturer\, an amateur astronomer\, and a financial analyst on the space shuttle program for Rockwell International. \nChris was the 2006 recipient of the Western Astronomical Association’s G. Bruce Blair Medal for service to astronomy. Chris was also recognized in 2002 by having an asteroid named in his honor by the International Astronomical Union (minor planet 13543 Butler). In 2008\, Chris was elected as a Fellow of the Royal Astronomical Society (F.R.A.S.) in recognition of his service to international science education. \nAn avid amateur astronomer\, Chris brings direct experience with astronomy to his work. He has served as a vice-president and board member of the Orange County Astronomers (the largest organization of its kind in the world)\, and is a life member of the Los Angeles Astronomical Society. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-november-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191011T193000
DTEND;TZID=America/Los_Angeles:20191011T193000
DTSTAMP:20260403T194702
CREATED:20190901T144927Z
LAST-MODIFIED:20200604T160816Z
UID:10000955-1570822200-1570822200@www.ocastronomers.org
SUMMARY:General Meeting - October 2019
DESCRIPTION:The Universe in Infrared Light (There is no Red in Infrared) \nThe infrared part of the electromagnetic spectrum plays an indispensable role in both terrestrial and astronomical applications. On Earth\, IR light runs our remote controls\, provides security and surveillance\, and identifies disease. In space\, infrared light allows us to explore planet surface features\, quantify an atmosphere\, and probe through a galactic dust cloud. As advanced technology expands both the size and sensitivity of the IR sensor array\, missions like New Horizons and spacecraft like the James Webb Space Telescope become practical. \n \nToday’s infrared devices make discoveries of thousands of asteroids by the likes of NeoWise to Big Bang protogalaxies imaged by Hubble-like space telescopes something no longer beyond human accomplishment.. This talk will make a somewhat abbreviated overview of the role infrared light and the IR sensor have played in modern astronomy. \n \nGary Bostrup \nGary is a retired Rockwell International Science Center semiconductor materials engineer working in the infrared (IR) sensor field. Over his career\, he helped design and build IR detectors for everything from the Hubble Space Telescope\, to the Deep Impact Probe\, to the New Horizons spacecraft\, to the James Web Space Telescope. Devices Gary help create are active to this day in astronomical observatories around the world from Mauna Kea in Hawaii to South Wales\, Australia. Among the many discoveries\, sensors built by his team helped establish the current limit of the Big Bang at 13.8 billion light years. recorded the first impacts on Jupiter of the comet Shoemaker-Levy\, and finally charted the surface of Pluto. Gary was honored to work with fellow engineers across several disciplines that designed and built the infrared sensors to be launched on the James Web Space Telescope in 2020.\nGary also trained to be an astronaut payload specialist\, intended to fly abroad the Space Shuttle Discovery. In the process\, he logged over 10\,800 seconds in near-zero gravity aboard NASA’s Vomit Comet Boeing 707 low gravity airplane platform. He also served on the NASA material design committee tasked to help build the International Space Station. Gary followed this with space research done at Edward’s Air Force Base\, Marshall Space Flight Center and NASA Washington. These days he enjoys collecting space memorabilia\, doing web design/coding\, and contacting the ISS space station as a ham radio operator. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-october-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190913T073000
DTEND;TZID=America/Los_Angeles:20190913T213000
DTSTAMP:20260403T194702
CREATED:20190713T083621Z
LAST-MODIFIED:20200604T161554Z
UID:10000934-1568359800-1568410200@www.ocastronomers.org
SUMMARY:General Meeting - September 2019
DESCRIPTION:News from the Universe\n \nThe Virgo and two LIGO Gravitational Wave observatories are in observation mode. They detect more than one inspiral event per week\, of Black Holes and Neutron Stars\, and started making a strange picture of the collapsed-matter Universe. \nWhy are there so many heavy Black Holes out there? How did they form in the early Universe? Why so many inspirals? And also why BH pairs appear to come from random pairing and not from binary star systems? And on another front\, how can pulsar neutron stars be spheres smoother than 20 µm over 12 km radius and still be rigid enough to generate the starquakes believed to cause the pulsar frequency glitches? These are some of the new questions we have to answer. We also learned about the source of at least one class of Gamma Ray Bursts\, the galactic gold factories\, and more. \nRiccardo DeSalvo\n \nA lifetime instrument maker\, starting from the laser of his thesis in Pisa\, then for 15 years in High Energy Physics (CERN and Cornell Lab for Nuclear Studies)\, finally 25 years on Gravitational Waves\, on mechanical design of GW detectors (Virgo\, TAMA\, KAGRA and parts of LIGO)\, initially on seismic isolation\, then on dissipation mechanisms and thermal noise in dielectric coating mirrors\, the limiting factor of GW detection. Presently make a living developing sensors for FB\, and work on coatings and GW developments as a personal hobby\, with 3-4 students. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-september-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190712T073000
DTEND;TZID=America/Los_Angeles:20190712T213000
DTSTAMP:20260403T194702
CREATED:20190622T165941Z
LAST-MODIFIED:20200604T160640Z
UID:10000891-1562916600-1562967000@www.ocastronomers.org
SUMMARY:General Meeting - July 2019
DESCRIPTION:From the big bang to the empty end – the universe from the point of view of modern cosmology \n \nThe scientific view point on our Universe has gone through a major transformation in the last decades. In my talk\, I will talk about the knows but also the major unknowns we have. My main focus will be on the observations that lead to our current understanding. \nSimon Birrer \n \nSimon Birrer is a Postdoctoral Researcher at the University of California\, Los Angeles (UCLA) in the department of Physics and Astronomy. Before joining UCLA\, he received his PhD from ETH Zurich in the cosmology research group. Birrer’s research focus on the mysteries of dark matter and dark energy. He is an expert in using strong gravitational lensing\, the bending in space-time that lead to strong distortions and multiple appearance of the same source\, to probe fundamental physics questions on cosmological scales. Birrer works in the interface between the exquisite data sets available on one side and the fundamental theory predictions on the other side. \nhttp://www.astro.ucla.edu/~sibirrer/ \n“What’s Up?” in this month will be presented by Chris Butler from OCA. \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-july-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190614T193000
DTEND;TZID=America/Los_Angeles:20190614T213000
DTSTAMP:20260403T194702
CREATED:20190529T214640Z
LAST-MODIFIED:20200604T160720Z
UID:10000871-1560540600-1560547800@www.ocastronomers.org
SUMMARY:General Meeting - June 2019
DESCRIPTION:Exoplanets: Finding Life in the Galaxy \nJoin Dr. Zellem\, a planetary astronomer at NASA’s Jet Propulsion Laboratory\, as he discusses how scientists find and characterize exoplanets\, planets outside of our Solar System\, with the ultimate goal of finding extraterrestrial life. \n \nRobert Zellem \n \nViews: 96
URL:https://www.ocastronomers.org/calendar/general-meeting-june-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
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END:VCALENDAR