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Free
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General Meeting – December 2025
Irvine Lecture Hall of the Chapman University 336 N Center St, Orange, CA, United StatesJoin Zoom This meeting's speaker will present live from Edinburgh, Scotland, UK. Settling Space with Microbes Microbes from extreme environments help us search for life on other planets like Mars, but they can also be used to advance the human exploration and settlement of space by producing useful products including mining metals. […]
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OCA Astrophysics SIG Meeting
Orange Coast College, Building 40, Astronomy House Merrimac Way, Costa Mesa, CA, United StatesThe 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 .
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Anza Star Party
On the Sky CA, United StatesThe 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.
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Beginner’s Class In-person event(New Location)
Orange Coast College, Outside Planetarium 2701 Fairview, Costa Mesa, CA, United StatesThis is a free and open to the public event (In-person event only). The 5th session of the Beginners Astronomy Class is the "How to Use Your Telescope". If you have a telescope and would like some help learning to set it up and use it, attend this Hands-on class. For details, please visit here […]
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OCA Astrophysics SIG Meeting
Orange Coast College, Building 40, Astronomy House Merrimac Way, Costa Mesa, CA, United StatesThe 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 .
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Anza Star Party
On the Sky CA, United StatesThe 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.
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OCA Board meeting
OnlineA 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.
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Private Outreach – Cypress Village Elementary
Cypress Village Elementary School 355 Rush Lily, Irvine, CA, United StatesFree -
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In-person Beginner’s Class(New Location)
Orange Coast College, Building 40, Astronomy House Merrimac Way, Costa Mesa, CA, United StatesThis is a free and open to the public event (in person event only) The 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. This […]