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X-WR-CALDESC:Events for Orange County Astronomers
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TZID:America/Los_Angeles
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251121T190000
DTEND;TZID=America/Los_Angeles:20251121T210000
DTSTAMP:20260406T172534
CREATED:20240826T011307Z
LAST-MODIFIED:20241220T053855Z
UID:10001363-1763751600-1763758800@www.ocastronomers.org
SUMMARY:OCA Astrophysics SIG Meeting
DESCRIPTION:The monthly meeting of the Astrophysics Special Interest Group is at 7:00 PM every third Friday of the month at Orange Coast College\, Building 40\, Astronomy House. Please contact the ASIG chair for details at mark@ocastronomers.org . \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-astrophysics-sig-meeting-3-2/2025-11-21/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251120T190000
DTEND;TZID=America/Los_Angeles:20251120T210000
DTSTAMP:20260406T172534
CREATED:20250602T190118Z
LAST-MODIFIED:20250602T190118Z
UID:10001709-1763665200-1763672400@www.ocastronomers.org
SUMMARY:Private Outreach: Stanley Elementary
DESCRIPTION:Views: 5
URL:https://www.ocastronomers.org/calendar/private-outreach-stanley-elementary/
LOCATION:Stanley Elementary Schol\, 12201 Elmwood St.\, Garden Grove\, 92840\, United States
CATEGORIES:Outreach
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20251115
DTEND;VALUE=DATE:20251116
DTSTAMP:20260406T172534
CREATED:20250222T211317Z
LAST-MODIFIED:20250222T211317Z
UID:10001691-1763164800-1763251199@www.ocastronomers.org
SUMMARY:Anza Star Party
DESCRIPTION:The new moon weekend for the monthly star party. The Anza site is open to members and their guests only. Join other members for viewing and imaging. Contact any board member if you have any questions. \nViews: 5
URL:https://www.ocastronomers.org/calendar/anza-star-party-11/
LOCATION:On the Sky\, CA\, United States
CATEGORIES:Private,Star Parties
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251114T190000
DTEND;TZID=America/Los_Angeles:20251114T210000
DTSTAMP:20260406T172534
CREATED:20251016T172753Z
LAST-MODIFIED:20251103T163624Z
UID:10001729-1763146800-1763154000@www.ocastronomers.org
SUMMARY:Astroimagers Special Interest Group
DESCRIPTION:Meeting of the Astroimaging Special Interest Group at Orange Coast College Astronomy House. Meeting is from 7pm to 10pm. Parking fees will apply and must be purchased online. \nAny questions please contact Kyle Coker \nViews: 5
URL:https://www.ocastronomers.org/calendar/astroimagers-special-interest-group-3/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251109T103000
DTEND;TZID=America/Los_Angeles:20251109T123000
DTSTAMP:20260406T172534
CREATED:20250928T193045Z
LAST-MODIFIED:20250928T193045Z
UID:10001726-1762684200-1762691400@www.ocastronomers.org
SUMMARY:OCA Board Meeting
DESCRIPTION:A meeting of the OCA Board to Trustees\, the meeting is held online via zoom starting at 10:30am. The meeting is open to current members\, please contact the club secretary to have a link sent to you for the meeting. \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-board-meeting-29/
LOCATION:Online
CATEGORIES:Board Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251107T193000
DTEND;TZID=America/Los_Angeles:20251107T213000
DTSTAMP:20260406T172534
CREATED:20251104T111254Z
LAST-MODIFIED:20251104T111711Z
UID:10001730-1762543800-1762551000@www.ocastronomers.org
SUMMARY:General Meeting – November 2025
DESCRIPTION: Join Zoom\n\nThis meeting’s speaker will present inperson from the Chapman campus.\n\n\n\n\n\n\n\nFrom OCA School Star Parties\n  \nto 4K Cameras in Orbit\n  \n\n\n\n\n\n\n\nIn this presentation\, Liam Kennedy\, amateur astronomer\, former president of the Orange County Astronomers\, and now SpaceTV Director at Sen\, shares his remarkable journey from local astronomy outreach to developing technology that now operates aboard the International Space Station. \nDuring his years supporting OCA’s public school programs in the 2000s\, Liam discovered how few people realized that astronauts were living and working overhead. That awareness gap sparked the idea that would later become ISS-Above — a small device that alerts users whenever the Space Station passes overhead and\, eventually\, displayed live video of Earth from orbit. \nWhat began as a personal project to inspire his grandchildren soon attracted global attention\, support from The Planetary Society and NASA\, and partnerships that placed ISS-Above units in classrooms across the U.S. When NASA’s original HDEV Earth-viewing cameras were retired\, Liam refused to let the public lose that connection to space. His persistence led him to collaborate with Sen\, a company dedicated to sharing real-time 4K views of Earth from orbit. \nThrough his initiative\, Sen’s SpaceTV-1 camera system became part of the ISS via Airbus’s Bartolomeo platform — fulfilling a vision that began two decades earlier with OCA telescope nights under the stars. \nThis talk brings that full-circle story to life — showing how one amateur astronomer’s outreach mission grew into a global window on our planet from space. \n \nLiam Kennedy joined Sen in July 2023 as Space TV Director. For over a decade\, he has championed live Earth views from the International Space Station (ISS) through his invention of ISS-Above\, a Raspberry Pi-based device delivering real-time ISS tracking and video feeds. Since its 2013 Kickstarter launch\, ISS-Above has expanded to more than 5\,000 installations worldwide\, inspiring students\, educators\, and the public. \nIn 2019\, NASA contacts connected Liam with Sen CEO Charles Black to explore building a commercial UHD camera payload for the ISS. That partnership led to SpaceTV-1\, a three-camera system launched in March 2024 and now operating on the Columbus module’s Bartolomeo platform. \nLiam’s background blends media production\, live streaming\, and product innovation\, with a focus on astronomy\, science\, and space outreach. He is a frequent presenter and thought leader in the commercial space sector\, featured on technology and space podcasts\, and a regular speaker at the ISS R&D Conference\, where he has presented five times since 2015. \n\n\n\n\n\n\n\n\nViews: 5
URL:https://www.ocastronomers.org/calendar/general-meeting-2025-11/
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:20251107T190000
DTEND;TZID=America/Los_Angeles:20251107T210000
DTSTAMP:20260406T172534
CREATED:20250803T192956Z
LAST-MODIFIED:20250803T192956Z
UID:10001716-1762542000-1762549200@www.ocastronomers.org
SUMMARY:Online Beginner's Class
DESCRIPTION:This is a free and open to the public online event\, to attend please register with zoom by clicking here at or after 6:40pm. \nThe 3rd session of the Beginners Astronomy Class covers different methods of finding objects in the night sky.  Special topic is learning the constellations. \nFor details\, please visit here and download the sample information PDF package. \nViews: 5
URL:https://www.ocastronomers.org/calendar/online-beginners-class-30/
LOCATION:Online
CATEGORIES:Beginner's Class
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251106T190000
DTEND;TZID=America/Los_Angeles:20251106T210000
DTSTAMP:20260406T172534
CREATED:20250425T163117Z
LAST-MODIFIED:20250903T041332Z
UID:10001704-1762455600-1762462800@www.ocastronomers.org
SUMMARY:Private Outreach: Portola Hills Elementary
DESCRIPTION:Views: 5
URL:https://www.ocastronomers.org/calendar/private-outreach-portola-hills-elementary/
LOCATION:Portola Hills Elementary School\, 19422 Saddleback Ranch Road\, Lake Forest\, CA\, 92679\, United States
CATEGORIES:Outreach,Private
ORGANIZER;CN="Dory Klinchuch":MAILTO:admin@portolahillspta.org
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251024T191500
DTEND;TZID=America/Los_Angeles:20251024T213000
DTSTAMP:20260406T172534
CREATED:20250604T181626Z
LAST-MODIFIED:20250604T181705Z
UID:10001710-1761333300-1761341400@www.ocastronomers.org
SUMMARY:Private Outreach: Cerro Villa Middle School
DESCRIPTION:Views: 5
URL:https://www.ocastronomers.org/calendar/private-outreach-cerro-villa-middle-school-2/
LOCATION:Cerro Villa Middle School\, 17852 Serrano Ave\, Villa Park\, CA\, 92861\, United States
CATEGORIES:Outreach
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20251018
DTEND;VALUE=DATE:20251019
DTSTAMP:20260406T172534
CREATED:20250222T211235Z
LAST-MODIFIED:20250222T211235Z
UID:10001690-1760745600-1760831999@www.ocastronomers.org
SUMMARY:Anza Star Party
DESCRIPTION:The new moon weekend for the monthly star party. The Anza site is open to members and their guests only. Join other members for viewing and imaging. Contact any board member if you have any questions. \nViews: 5
URL:https://www.ocastronomers.org/calendar/anza-star-party-10/
LOCATION:On the Sky\, CA\, United States
CATEGORIES:Private,Star Parties
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251017T193000
DTEND;TZID=America/Los_Angeles:20251017T213000
DTSTAMP:20260406T172534
CREATED:20251005T164803Z
LAST-MODIFIED:20251005T165205Z
UID:10001362-1760729400-1760736600@www.ocastronomers.org
SUMMARY:OCA Astrophysics SIG Meeting
DESCRIPTION:Our October ASIG meeting will be held with the OCA General Meeting at Chapman University. Please see the OCA website for directions.  ASIG will return to OCC Astronomy House in November \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-astrophysics-sig-meeting-3-2-2/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251017T193000
DTEND;TZID=America/Los_Angeles:20251017T213000
DTSTAMP:20260406T172534
CREATED:20250911T171111Z
LAST-MODIFIED:20250911T171437Z
UID:10001721-1760729400-1760736600@www.ocastronomers.org
SUMMARY:General Meeting – October 2025
DESCRIPTION: Join Zoom\n\nThis meeting’s speaker will present inperson from the Chapman campus.\n\n\n\n\n\n\n\n\nThe Search for Earth 2.0:\n  \nWhy We Think It Exists\, and\n  \nHow We’re Going To Find It\n  \n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\nFor thousands of years\, we’ve wondered if the Earth is unique\, or if there are other Earths out there to find. In just the last 30 years\, we’ve progressed from merely wondering if planets exist around other stars to knowing that almost every star we see has planets. Ambitious planet searches have been probing further and further\, finding planetary systems of an incredible – and incredibly surprising! – variety. However\, we have yet to discover another planet that might be like Earth – a rocky planet orbiting just the right distance from a Sun-like star to have liquid water on its surface. NASA has a audacious new plan for a next-generation flagship telescope that will directly image Earth-like planets around nearby stars\, but it will take all of our ingenuity and technical prowess to achieve this incredible feat. Dr Christiansen will walk you through the past\, present\, and future of our hunt for Earth 2.0. \n \n\n\n\n\n\n\n\n\nDr. Jessie Christiansen is the Chief Scientist of the NASA Exoplanet Science Institute and a TED fellow. She has worked on NASA’s Kepler\, K2\, and TESS missions\, searching the sky for exoplanets\, and is helping plan for NASA’s next big flagship missions – the Nancy Grace Roman Space Telescope\, and the Habitable Worlds Observatory. Dr. Christiansen’s research is in the detection and characterization of exoplanets – planets around other stars – and studies of exoplanet populations\, and she is currently the most successful woman planet hunter in the world. \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nViews: 5
URL:https://www.ocastronomers.org/calendar/general-meeting-2025-10/
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:20251003T190000
DTEND;TZID=America/Los_Angeles:20251003T210000
DTSTAMP:20260406T172534
CREATED:20250920T191137Z
LAST-MODIFIED:20250920T191138Z
UID:10001677-1759518000-1759525200@www.ocastronomers.org
SUMMARY:Astroimagers Special Interest Group
DESCRIPTION:Meeting of the Astroimaging Special Interest Group at Orange Coast College Astronomy House. Meeting is from 7pm to 10pm. Parking fees will apply and must be purchased online. \nAny questions please contact Kyle Coker \nViews: 5
URL:https://www.ocastronomers.org/calendar/astroimagers-special-interest-group-2-2/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:AstroImagers,SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20251003T190000
DTEND;TZID=America/Los_Angeles:20251003T210000
DTSTAMP:20260406T172534
CREATED:20250803T192801Z
LAST-MODIFIED:20250803T192801Z
UID:10001715-1759518000-1759525200@www.ocastronomers.org
SUMMARY:Online Beginner's Class
DESCRIPTION:This is a free and open to the public online event\, to attend please register with zoom by clicking here at or after 6:40pm. \nThe 2nd session of the Beginners Astronomy Class covers the different types of equipment used to observe the night sky\, including telescopes\, mounts\, eyepieces\, filters\, and advantages and disadvantages of different options. \nThis session is a must if thinking about buying a telescope. \nFor details\, please visit here and download the sample information PDF package. \nViews: 5
URL:https://www.ocastronomers.org/calendar/online-beginners-class-29/
LOCATION:Online
CATEGORIES:Beginner's Class
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250928T113000
DTEND;TZID=America/Los_Angeles:20250928T140000
DTSTAMP:20260406T172534
CREATED:20250920T191359Z
LAST-MODIFIED:20250920T191359Z
UID:10001725-1759059000-1759068000@www.ocastronomers.org
SUMMARY:OCA Board Meeting
DESCRIPTION:A meeting of the OCA Board to Trustees\, the meeting is held online via zoom starting at 11:30am. The meeting is open to current members\, please contact the club secretary to have a link sent to you for the meeting. \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-board-meeting-28/
LOCATION:Online
CATEGORIES:Board Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250920
DTEND;VALUE=DATE:20250921
DTSTAMP:20260406T172534
CREATED:20250222T211206Z
LAST-MODIFIED:20250222T211206Z
UID:10001689-1758326400-1758412799@www.ocastronomers.org
SUMMARY:Anza Star Party
DESCRIPTION:The new moon weekend for the monthly star party. The Anza site is open to members and their guests only. Join other members for viewing and imaging. Contact any board member if you have any questions. \nViews: 5
URL:https://www.ocastronomers.org/calendar/anza-star-party-9/
LOCATION:On the Sky\, CA\, United States
CATEGORIES:Private,Star Parties
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250919T190000
DTEND;TZID=America/Los_Angeles:20250919T210000
DTSTAMP:20260406T172534
CREATED:20240826T011307Z
LAST-MODIFIED:20241220T053855Z
UID:10001361-1758308400-1758315600@www.ocastronomers.org
SUMMARY:OCA Astrophysics SIG Meeting
DESCRIPTION:The monthly meeting of the Astrophysics Special Interest Group is at 7:00 PM every third Friday of the month at Orange Coast College\, Building 40\, Astronomy House. Please contact the ASIG chair for details at mark@ocastronomers.org . \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-astrophysics-sig-meeting-3-2/2025-09-19/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250912T193000
DTEND;TZID=America/Los_Angeles:20250912T213000
DTSTAMP:20260406T172534
CREATED:20250706T225424Z
LAST-MODIFIED:20250706T225719Z
UID:10001713-1757705400-1757712600@www.ocastronomers.org
SUMMARY:General Meeting – September 2025
DESCRIPTION: Join Zoom\n\nThis meeting’s speaker will present inperson from the Chapman campus.\nPathway to a\n  \nPost-Global Warming Future\n  \n— A Brief Overview of Climate Science\,\n  \nConsequences\, and Solutions\n  \n(and their astronomical connections!)\n  \n \n  \nGlobal warming may not seem obviously connected to astronomy — but it is. In fact\, the basic science of global warming is best understood through comparative study of planets. In this presentation\, astrophysicist/educator Jeffrey Bennett will give you a brief overview of the surprisingly simple basic science behind global warming (including its astronomical connections) and of the consequences we can expect from this warming. Most important\, he’ll focus on solutions and how we can in principle take the steps necessary to create a “post-global warming” future\, meaning a future in which today’s children will someday be able to talk about global warming as a once-serious problem that we found a way to solve. Note: This talk is based on Dr. Bennett’s book A Global Warming Primer — Pathway to a Post-Global Warming Future. \n \nAstrophysicist/educator Jeffrey Bennett has devoted his career to science education and outreach. He is probably best known to the astronomy community as the lead author of the widely used textbooks The Cosmic Perspective and Life in the Universe. He is also the author of textbooks in math and statistics; of several critically acclaimed books for educators and the public; and of 7 award-winning science books for children. He served two years as a visiting senior scientist at NASA headquarters\, proposed and co-led development of the Voyage Scale Model Solar System on the National Mall (Washington\, D.C.)\, created the free Totality app for learning about solar eclipses\, and created a free online textbook for middle school Earth and Space Science. Among other honors\, his children’s books were the first ever selected for Story Time From Space\, in which books are launched to the International Space Station and read aloud by astronauts\, and he has won both the American Institute of Physics Science Communication Award (2014) and the Klopsteg Memorial Award (2023) for education from the American Association of Physics Teachers. In addition to his ongoing speaking series on global warming\, his current projects include working to spread Voyage model solar systems across the country\, a planetarium show based on his book Max Goes to Mars\, and a new book on The Scale of the Universe to be published in January. \nViews: 5
URL:https://www.ocastronomers.org/calendar/general-meeting-2025-09/
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:20250905T190000
DTEND;TZID=America/Los_Angeles:20250905T210000
DTSTAMP:20260406T172534
CREATED:20250803T192336Z
LAST-MODIFIED:20250803T193804Z
UID:10001714-1757098800-1757106000@www.ocastronomers.org
SUMMARY:Online Beginner's Class
DESCRIPTION:This is a free and open to the public online Zoom event\, to attend please click here at or after 6:40pm \nThe 1st session of the Beginners Astronomy Class gives a general overview of all of the different objects you can see in the night and day time skies\, with some history and information about what they are and their significance.  An overview of the current scientific understanding of the Universe’s beginning\, present and future is also covered. \nFor details\, please visit here and download the sample information PDF package. \nViews: 5
URL:https://www.ocastronomers.org/calendar/online-beginners-class-28/
LOCATION:Online
CATEGORIES:Beginner's Class
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250905T080000
DTEND;TZID=America/Los_Angeles:20250905T170000
DTSTAMP:20260406T172534
CREATED:20250217T164549Z
LAST-MODIFIED:20250217T164549Z
UID:10001676-1757059200-1757091600@www.ocastronomers.org
SUMMARY:Astroimagers Special Interest Group
DESCRIPTION:Meeting of the Astroimaging Special Interest Group at Orange Coast College Astronomy House. Meeting is from 7pm to 10pm. Parking fees will apply and must be purchased online. \nAny questions please contact Kyle Coker \nViews: 5
URL:https://www.ocastronomers.org/calendar/astroimagers-special-interest-group-2/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:AstroImagers,SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250823
DTEND;VALUE=DATE:20250824
DTSTAMP:20260406T172534
CREATED:20250222T211127Z
LAST-MODIFIED:20250222T211127Z
UID:10001688-1755907200-1755993599@www.ocastronomers.org
SUMMARY:Anza Star Party
DESCRIPTION:The new moon weekend for the monthly star party. The Anza site is open to members and their guests only. Join other members for viewing and imaging. Contact any board member if you have any questions. \nViews: 5
URL:https://www.ocastronomers.org/calendar/anza-star-party-8/
LOCATION:On the Sky\, CA\, United States
CATEGORIES:Private,Star Parties
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250815T190000
DTEND;TZID=America/Los_Angeles:20250815T210000
DTSTAMP:20260406T172534
CREATED:20240826T011307Z
LAST-MODIFIED:20241220T053855Z
UID:10001360-1755284400-1755291600@www.ocastronomers.org
SUMMARY:OCA Astrophysics SIG Meeting
DESCRIPTION:The monthly meeting of the Astrophysics Special Interest Group is at 7:00 PM every third Friday of the month at Orange Coast College\, Building 40\, Astronomy House. Please contact the ASIG chair for details at mark@ocastronomers.org . \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-astrophysics-sig-meeting-3-2/2025-08-15/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250808T193000
DTEND;TZID=America/Los_Angeles:20250808T213000
DTSTAMP:20260406T172534
CREATED:20250515T121107Z
LAST-MODIFIED:20250515T121414Z
UID:10001708-1754681400-1754688600@www.ocastronomers.org
SUMMARY:General Meeting – August 2025
DESCRIPTION: Join Zoom\n\nThis meeting’s speaker will present online from Topeka\, KS.\nExploding Stars and Life on Earth\n  \n \nScientists have long speculated that the history of life on Earth may have been influenced by cosmic explosions such as supernovae.  In recent decades the combination of astrophysical data and computational models have allowed detailed study of the potential effects of nearby stellar explosions on Earth’s atmosphere and biosphere.  Impacts range from destruction of stratospheric ozone\, exposing life to extreme levels of solar UV\, to direct damage to organisms by high-energy neutrons and muons.  This talk will summarize what is known today and discuss connections to mass extinctions and the evolution of life over the last few hundred million years. \n \nDr. Brian Thomas is a Professor in the Physics & Astronomy Department at Washburn University\, in Topeka\, Kansas.  Since 2003 he has worked on various problems related to understanding how the history of life on Earth may have been affected by high-energy astrophysical events such as gamma-ray bursts and supernovae.  He and collaborators from multiple disciplines have together produced some of the most detailed and state-of-the-art studies of the effects on Earth by nearby stellar explosions. \nViews: 5
URL:https://www.ocastronomers.org/calendar/general-meeting-2025-08/
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:20250802T200000
DTEND;TZID=America/Los_Angeles:20250802T213000
DTSTAMP:20260406T172534
CREATED:20240910T181941Z
LAST-MODIFIED:20240910T181941Z
UID:10001630-1754164800-1754170200@www.ocastronomers.org
SUMMARY:Public Outreach: Annual Fountain Valley Sports Park Campout
DESCRIPTION:Views: 5
URL:https://www.ocastronomers.org/calendar/public-outreach-annual-fountain-valley-sports-park-campout/
LOCATION:Fountain Valley Recreation Center\, 16400 Brookhurst St\,\, Fountain Valley\, 92708\, United States
CATEGORIES:Outreach
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250801T193000
DTEND;TZID=America/Los_Angeles:20250801T213000
DTSTAMP:20260406T172534
CREATED:20250110T021941Z
LAST-MODIFIED:20250110T022741Z
UID:10001652-1754076600-1754083800@www.ocastronomers.org
SUMMARY:In-person Beginner's Class(New Location)
DESCRIPTION:This is a free and open to the public event (in person event only) \nThe 6th session of the Beginners Astronomy Class covers the basics of astrophotography\, covering different types of imaging\, how different types of cameras are used for this kind of photography\, and other equipment and considerations for taking a good picture.\nThis session is taught by Kyle Coker\, who is active in the club’s AstroImaging special interest group. \nFree and open to the public as well as members of OCA. \nFor details\, please visit here and download the sample information PDF package. \nEvent is held at Orange Coast College\, Building 40\, Astronomy House. \nLook for Planetarium Parking\, LOT E. \nParking is $5.35 for a virtual daily parking permit and can only be paid online or by app at this time. There is no kiosk at the parking lot.\nFor instructions click on:\nhttps://orangecoastcollege.edu/about/parking-and-public-safety/parking/index.html\n\nScroll down to:    PURCHASE VIRTUAL DAILY PARKING PERMITS.  You want LOT E which is ZONE 92847.   \n\nClick on the link for PassportParking.com to pay online.   Go to the Menu and click on the PayOnline Button and follow the prompts.  If you want to download the app\, also usable at many other locations in the region and in the US\, please follow the instructions provided by the App.\n  \nViews: 5
URL:https://www.ocastronomers.org/calendar/in-person-beginners-classnew-location/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:Beginner's Class
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250726
DTEND;VALUE=DATE:20250727
DTSTAMP:20260406T172534
CREATED:20250222T211102Z
LAST-MODIFIED:20250611T004948Z
UID:10001687-1753488000-1753574399@www.ocastronomers.org
SUMMARY:Anza Star Party and Star BQue
DESCRIPTION:The new moon weekend for the monthly star party. The Anza site is open to members and their guests only. Join other members for viewing and imaging. Contact any board member if you have any questions. This weekend is also our annual Star-bque pot luck star party. Bring and entree or item to share with your fellow astronomers and spend a warm summer night under the stars. Subject to cancellation due to weather or other conditions beyond our control. \nViews: 5
URL:https://www.ocastronomers.org/calendar/anza-star-party-7/
LOCATION:On the Sky\, CA\, United States
CATEGORIES:Private,Star Parties
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250718T190000
DTEND;TZID=America/Los_Angeles:20250718T210000
DTSTAMP:20260406T172534
CREATED:20240826T011307Z
LAST-MODIFIED:20241220T053855Z
UID:10001359-1752865200-1752872400@www.ocastronomers.org
SUMMARY:OCA Astrophysics SIG Meeting
DESCRIPTION:The monthly meeting of the Astrophysics Special Interest Group is at 7:00 PM every third Friday of the month at Orange Coast College\, Building 40\, Astronomy House. Please contact the ASIG chair for details at mark@ocastronomers.org . \nViews: 5
URL:https://www.ocastronomers.org/calendar/oca-astrophysics-sig-meeting-3-2/2025-07-18/
LOCATION:Orange Coast College\, Building 40\, Astronomy House\, Merrimac Way\, Costa Mesa\, CA\, 92626\, United States
CATEGORIES:SIG Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20250711T193000
DTEND;TZID=America/Los_Angeles:20250711T213000
DTSTAMP:20260406T172534
CREATED:20250430T084304Z
LAST-MODIFIED:20250430T084422Z
UID:10001705-1752262200-1752269400@www.ocastronomers.org
SUMMARY:General Meeting – July 2025
DESCRIPTION: Join Zoom\n\nThis meeting’s speaker will present inperson.\n  \nBackyard Exoplanet Observatory …\n  \nmeasuring exoplanets with\n  \na small backyard telescope\n  \n \nAmateur astronomers can measure exoplanet parameters from their suburban backyard using a small telescope\, astronomy camera\, and a laptop\n \n  \nMr Hallman is a retired physicist with over 30 years experience in the aerospace industry doing design\, development\, and testing of imaging systems and sensors operating in the Visible\, Infrared\, and Radar spectral regions. He has been a member of the OCA for 1 year\, and is currently building a backyard Radio Telescope. \nViews: 5
URL:https://www.ocastronomers.org/calendar/general-meeting-2025-07/
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:20250707T193000
DTEND;TZID=America/Los_Angeles:20250707T213000
DTSTAMP:20260406T172534
CREATED:20250110T021816Z
LAST-MODIFIED:20250611T155301Z
UID:10001651-1751916600-1751923800@www.ocastronomers.org
SUMMARY:Beginner's Class In-person event(New Location)
DESCRIPTION:This is a free and open to the public  event (In-person event only). \nThe 5th session of the Beginners Astronomy Class is the “How to Use Your Telescope”. \nIf you have a telescope and would like some help learning to set it up and use it\, attend this Hands-on class. \nFor details\, please visit here and download the sample information PDF package. \nEvent is held at Orange Coast College\, near Planetarium. \nLook for Planetarium Parking\, LOT E \nParking is $5.35 for a virtual daily parking permit and can only be paid online or by app at this time. There is no kiosk at the parking lot.\nFor instructions click on:\nhttps://orangecoastcollege.edu/about/parking-and-public-safety/parking/index.html\n\nScroll down to:    PURCHASE VIRTUAL DAILY PARKING PERMITS.  You want LOT E which is ZONE 92847.   \n\nClick on the link for PassportParking.com to pay online.   Go to the Menu and click on the PayOnline Button and follow the prompts.  If you want to download the app\, also usable at many other locations in the region and in the US\, please follow the instructions provided by the App.\nViews: 5
URL:https://www.ocastronomers.org/calendar/beginners-class-in-person-eventnew-location/
LOCATION:Orange Coast College\, Outside Planetarium\, 2701 Fairview\, Costa Mesa\, CA\, 92626\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250628
DTEND;VALUE=DATE:20250629
DTSTAMP:20260406T172534
CREATED:20250222T211033Z
LAST-MODIFIED:20250222T211033Z
UID:10001686-1751068800-1751155199@www.ocastronomers.org
SUMMARY:Anza Star Party
DESCRIPTION:The new moon weekend for the monthly star party. The Anza site is open to members and their guests only. Join other members for viewing and imaging. Contact any board member if you have any questions. \nViews: 5
URL:https://www.ocastronomers.org/calendar/anza-star-party-6/
LOCATION:On the Sky\, CA\, United States
CATEGORIES:Private,Star Parties
END:VEVENT
END:VCALENDAR