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Free
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General Meeting – June 2025
Irvine Lecture Hall of the Chapman University 336 N Center St, Orange, CA, United StatesJoin Zoom This meeting's speaker will present online from Los Angeles. A Trip to the Center of Our Galaxy The heart of the Milky Way is home to Sagittarius A*, a supermassive black hole approximately four million times the mass of the Sun. Although it remains largely quiet today, it is surrounded by […]
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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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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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General Meeting – July 2025
Irvine Lecture Hall of the Chapman University 336 N Center St, Orange, CA, United StatesJoin Zoom This meeting's speaker will present inperson. Backyard Exoplanet Observatory ... measuring exoplanets with a small backyard telescope Amateur astronomers can measure exoplanet parameters from their suburban backyard using a small telescope, astronomy camera, and a laptop Mr Hallman is a retired physicist with over 30 years experience in […]
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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 and Star BQue
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. This weekend is also our annual Star-bque pot luck star party. Bring and entree or item to share with […]
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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 […]