Online Beginner’s Class

Online

This is a free and open to the public online Zoom event, to attend please click here at or after 7:10pm The 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 […]

OCA Board Meeting

Online

The Board of Directors for the OCA will be having their meeting on March 9,2025 at 11:30am via Zoom. All current members are welcome, please notify the OCA secretary and a link will be sent out on the day of the meeting. Contact any board member with questions.

Total Lunar Eclipse

On the Sky CA, United States

Tonight the moon will be eclipsed by the Earth's shadow. It will be viewable throughout North America. It will start just before 9PM and end just before 3AM on 03/14/2025.

General Meeting – March 2025

Irvine Lecture Hall of the Chapman University 336 N Center St, Orange, CA, United States

 Join Zoom This meeting's speaker will present inperson.   Mars Helicopter Telecom   The highly successful Ingenuity - Mars Helicopter - technology demonstration came to an end in January 2024 after 72 flights over 1000 sols (1.5 Mars years) exploring Mars.  The author led the telecommunications team for Ingenuity from conception through flight operations and […]

Event Series OCA Astrophysics SIG Meeting

OCA Astrophysics SIG Meeting

Orange Coast College, Building 40, Astronomy House Merrimac Way, Costa Mesa, CA, United States

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 .

Anza Star Party – Messier Marathon

On the Sky CA, United States

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 night is also recommended if you want to do a Messier Marathon.