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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231209T220000
DTEND;TZID=America/Los_Angeles:20231209T233000
DTSTAMP:20260405T194157
CREATED:20230131T204519Z
LAST-MODIFIED:20230131T204519Z
UID:10001296-1702159200-1702164600@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-12/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231208T193000
DTEND;TZID=America/Los_Angeles:20231208T213000
DTSTAMP:20260405T194157
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: 10
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:20231111T220000
DTEND;TZID=America/Los_Angeles:20231111T233000
DTSTAMP:20260405T194157
CREATED:20230131T204451Z
LAST-MODIFIED:20230131T204451Z
UID:10001295-1699740000-1699745400@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-11/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231110T193000
DTEND;TZID=America/Los_Angeles:20231110T213000
DTSTAMP:20260405T194157
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: 10
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:20231014T220000
DTEND;TZID=America/Los_Angeles:20231014T233000
DTSTAMP:20260405T194157
CREATED:20230131T204422Z
LAST-MODIFIED:20230131T204422Z
UID:10001294-1697320800-1697326200@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-10/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20231013T193000
DTEND;TZID=America/Los_Angeles:20231013T213000
DTSTAMP:20260405T194157
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: 10
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:20230909T220000
DTEND;TZID=America/Los_Angeles:20230909T233000
DTSTAMP:20260405T194157
CREATED:20230131T204355Z
LAST-MODIFIED:20230131T204355Z
UID:10001293-1694296800-1694302200@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-09/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230908T193000
DTEND;TZID=America/Los_Angeles:20230908T213000
DTSTAMP:20260405T194157
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: 10
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:20230812T220000
DTEND;TZID=America/Los_Angeles:20230812T233000
DTSTAMP:20260405T194157
CREATED:20230131T204324Z
LAST-MODIFIED:20230131T204324Z
UID:10001292-1691877600-1691883000@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-08/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230811T193000
DTEND;TZID=America/Los_Angeles:20230811T213000
DTSTAMP:20260405T194157
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: 10
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:20230715T220000
DTEND;TZID=America/Los_Angeles:20230715T233000
DTSTAMP:20260405T194157
CREATED:20230131T204300Z
LAST-MODIFIED:20230131T204300Z
UID:10001291-1689458400-1689463800@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-07/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230714T193000
DTEND;TZID=America/Los_Angeles:20230714T213000
DTSTAMP:20260405T194157
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: 10
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:20230610T220000
DTEND;TZID=America/Los_Angeles:20230610T233000
DTSTAMP:20260405T194157
CREATED:20230131T204233Z
LAST-MODIFIED:20230131T204233Z
UID:10001290-1686434400-1686439800@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-06/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230609T193000
DTEND;TZID=America/Los_Angeles:20230609T213000
DTSTAMP:20260405T194157
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: 10
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:20230513T220000
DTEND;TZID=America/Los_Angeles:20230513T233000
DTSTAMP:20260405T194157
CREATED:20230131T204143Z
LAST-MODIFIED:20230131T204209Z
UID:10001289-1684015200-1684020600@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-05/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230512T193000
DTEND;TZID=America/Los_Angeles:20230512T213000
DTSTAMP:20260405T194157
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: 10
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:20230415T220000
DTEND;TZID=America/Los_Angeles:20230415T233000
DTSTAMP:20260405T194157
CREATED:20230129T114416Z
LAST-MODIFIED:20230129T114416Z
UID:10001287-1681596000-1681601400@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-04/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230414T193000
DTEND;TZID=America/Los_Angeles:20230414T213000
DTSTAMP:20260405T194157
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: 10
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:20230311T220000
DTEND;TZID=America/Los_Angeles:20230311T233000
DTSTAMP:20260405T194157
CREATED:20230129T114317Z
LAST-MODIFIED:20230129T114317Z
UID:10001285-1678572000-1678577400@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-03/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230310T193000
DTEND;TZID=America/Los_Angeles:20230310T213000
DTSTAMP:20260405T194157
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: 10
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:20230218T220000
DTEND;TZID=America/Los_Angeles:20230218T233000
DTSTAMP:20260405T194157
CREATED:20230129T114255Z
LAST-MODIFIED:20230129T114255Z
UID:10001284-1676757600-1676763000@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-02/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230217T193000
DTEND;TZID=America/Los_Angeles:20230217T213000
DTSTAMP:20260405T194157
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: 10
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:20230114T220000
DTEND;TZID=America/Los_Angeles:20230114T233000
DTSTAMP:20260405T194157
CREATED:20230129T114236Z
LAST-MODIFIED:20230129T114236Z
UID:10001283-1673733600-1673739000@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2023-01/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230113T193000
DTEND;TZID=America/Los_Angeles:20230113T213000
DTSTAMP:20260405T194157
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: 10
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:20221210T220000
DTEND;TZID=America/Los_Angeles:20221210T233000
DTSTAMP:20260405T194157
CREATED:20220123T193448Z
LAST-MODIFIED:20220123T193448Z
UID:10001216-1670709600-1670715000@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2022-12/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221209T193000
DTEND;TZID=America/Los_Angeles:20221209T210000
DTSTAMP:20260405T194157
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: 10
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:20221112T220000
DTEND;TZID=America/Los_Angeles:20221112T233000
DTSTAMP:20260405T194157
CREATED:20220123T193152Z
LAST-MODIFIED:20220123T193152Z
UID:10001213-1668290400-1668295800@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2022-11/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221111T193000
DTEND;TZID=America/Los_Angeles:20221111T213000
DTSTAMP:20260405T194157
CREATED:20220827T183025Z
LAST-MODIFIED:20220827T183025Z
UID:10001265-1668195000-1668202200@www.ocastronomers.org
SUMMARY:Online General Meeting – November 2022
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n\n\n  \nX-raying the Winds of Giant Stars\n\n  \n\n  \n  \n  \nWe are made of stardust—or\, at least in significant parts\, of material produced in giant stars. These giant stars have strong winds that strip away the outer layers of stellar material. To understand giant stars\, astronomers thus need to understand their winds. In this talk\, Dr. Grinberg will explain why astrophysicists use space-based X-ray telescopes such as ESA’s XMM-Newton to study such winds and show how they are using black holes and neutron stars as backlights to make such stellar winds visible. \n  \nPhoto:Friedhelm Albrecht/Universität Tübingen \n  \nDr. Victoria Grinberg is an astrophysicist working in the Netherlands for the European Space Agency (ESA) where she helps ESA communicate with the scientific community. After her PhD in Germany\, her research has taken her around the world – USA\, the Netherlands and again Germany – before accepting her current position. Using space-based telescopes\, Dr. Grinberg is studying the most extreme environments in our Universe: black holes\, neutron stars\, and the winds of the most massive giant stars. She also publishes on sustainability and climate crisis from an astrophysics perspective. In her free time\, Dr. Grinberg creates cartoons about science and academia. \nViews: 10
URL:https://www.ocastronomers.org/calendar/general-meeting-2022-11/
LOCATION:Online
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221014T193000
DTEND;TZID=America/Los_Angeles:20221014T213000
DTSTAMP:20260405T194157
CREATED:20220717T185924Z
LAST-MODIFIED:20220717T202134Z
UID:10001257-1665775800-1665783000@www.ocastronomers.org
SUMMARY:Online General Meeting – October 2022
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n\n  \n  \nThe Dynamic Sky:\n  \n  \nHow We Find Discover and Understand\n  \n  \nStellar Explosions in the 21st Century\n  \n\n \n  \nHumans have recorded the appearance of “new stars” since prehistory\, but only in the last century have astronomers begun to understand their nature as stellar explosions. These “supernovae” provide clues about the lives and deaths of stars\, the formation and evolution of galaxies\, the production and distribution of chemical elements (including those required for life on Earth)\, and even the accelerating expansion of the Universe. \n \nIn the last two decades\, the discovery rate of supernovae has ballooned from hundreds per year to tens of thousands per year\, and in the coming decade\, it will reach into the millions. This explosion can be traced back to the same technological advances behind the Internet age: high-speed telecommunications\, digital imaging\, increased computer processing power\, and machine learning. This presentation will explore the history and future of supernova observations\, with a focus on the technology behind them and the science they enable. \n  \n \n  \nDr. Griffin Hosseinzadeh is a postdoctoral researcher at Steward Observatory at the University of Arizona\, where he studies various types of stellar explosions. He was previously a postdoctoral researcher at the Center for Astrophysics | Harvard & Smithsonian. He received his bachelor’s in physics from UC Berkeley in 2012 and his Ph.D. in astrophysics from UC Santa Barbara in 2018. \n  \n  \nViews: 10
URL:https://www.ocastronomers.org/calendar/general-meeting-2022-10/
LOCATION:Online
CATEGORIES:General Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220910T220000
DTEND;TZID=America/Los_Angeles:20220910T233000
DTSTAMP:20260405T194157
CREATED:20220123T192929Z
LAST-MODIFIED:20220123T192929Z
UID:10001212-1662847200-1662852600@www.ocastronomers.org
SUMMARY:Open Spiral Bar
DESCRIPTION:This is a free and open to the public online event. \nJoin Zoom\n  \nCome and socialize with your fellow astronomy enthusiasts face-to-face virtually!\nBring your latest astrophotography\, mini-presentation\, questions or none and your own refreshments. \n \nViews: 10
URL:https://www.ocastronomers.org/calendar/open-spiral-bar-2022-09/
LOCATION:Online
CATEGORIES:Meeting After the Meeting
END:VEVENT
END:VCALENDAR