Riverside Astronomical Society—Outreach, star parties, dark sky site, and you!

Next Virtual Club Meeting

Saturday, July 24th

The RAS holds monthly virtual meetings. Details for joining will be posted on the Meeting Details page or will be emailed to members during the week prior to the Saturday meeting.

Remember, RAS Star Parties and Outreach Events are postponed until further notice due to ongoing COVID-19 travel and gathering restrictions. Travel to GMARS is highly discouraged at this time, and gathering in groups of 5 or more or with anyone outside your immediate household while at GMARS is strictly prohibited!

Stay tuned to this website and to our Facebook page for updates.

Attend a Riverside Astronomical Society star party at the Goat Mountain Astronomical Research Station (GMARS) in southern California's Inland Empire
Join the best astronomy club in southern California—the Riverside Astronomical Society!

Special Rates for
New Members!

  • Individual: $20
  • Family: $25
  • Student: $20

(Your membership will be valid through 6/2022!)


Calendar of events for the Riverside Astronomical Society
Follow the best astronomy club in southern California, the Riverside Astronomical Society!

Quick links for browsing your way through RivAstro.org—The RAS Website—and getting to other sites

New Moon Weekend at GMARS

Friday, August 6th – Sunday, August 8th

We're still not ready to return to our normal star party activities BUT the club may open the houses at GMARS on new moon weekends until further notice (new moon weekends are those weekends that we've scheduled as "star parties" even though we're not having a star-b-q or other organized activities on those weekends).

If visiting GMARS on a new moon weekend, we are still advising that you observe social distancing, surface-cleaning, and mask-wearing. See the GMARS section of this page for more details.

The Double Star Cluster in Perseus by Glenn Diekmann.

The Double Star Cluster in Perseus by Glenn Diekmann. Click the image for a larger version.

RAS Calendar of Events

Ask the Outreach Director to add an event to the calendar. View larger calendar.

The scene at a GMARS Star Party. Join the Riverside Astronomical Society in Landers at our next star party! Photo by Michael Bauer.