Riverside Astronomical Society—Outreach, star parties, dark sky site, and you!
Next monthly meeting of the Riverside Astronomical Society

RAS Monthly Meeting

Saturday, July 8th (Regular)

GMARS monthly meetings are your opportunity to attend free presentatons by professional astronomers, catch up on club business, and hear about the latest happenings in the night sky (sometimes the day time sky too!). Our general meetings are always free and open to the public.

  • Pre-Meeting Dinner: 5:00PM at Don José Restaurant
  • Beginner's Corner: 6:30PM at Cossentine Hall at La Sierra University
  • Monthly Meeting: 7:00PM at Cossentine Hall at La Sierra University

Warren Keller PixInsight Seminar

Warren Keller presents PixInsight at GMARS
September 23

Sponsored by Woodland Hills Camera & Telescopes

Telescopes.net >

Nightfall 2017

Nightfall Star Party 2017
October 19-22

Learn More >

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 6/2018!)


Next star party of the Riverside Astronomical Society–The best astronomy club in southern California!

Next Star Party

June 23rd thru 25th

After last month's RTMC Astronomy Expo, our next official star party will be back at GMARS! Join us for great T-shirt weather viewing conditions under the Milky Way.

GMARS star parties begin on Friday afternoon/evening and wrap up on Sunday morning. Be sure to join us for the potluck Star-B-Q on Saturday afternoon (roughly 60-90 minutes before sun down). We provide the dogs, burgers and fixings. You provide a sidedish, dessert or beverages!

Nightfall 2017 is closer than you think! Check out this short video from the Anza-Borrego Desert State Park during last year's Nightfall. Also, browse through the 2016 Nightfall archives, then make your reservation for 2017 if you haven't already!

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.