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

RAS Monthly Meeting

Saturday, August 5th (Regular & Board)

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 daytime sky too!). Our general meetings are always free and open to the public.

  • RAS Board Meeting: 3:00PM-5:00PM at Don José Restaurant
  • 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

Special Event at GMARS
Warren Keller PixInsight Workshop at GMARS sponsored by Woodland Hills Camera & Telescopes

Warren Keller presents
PixInsight at GMARS
September 23rd

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

July 21st thru 23rd

It's the last star party before the Great American Total Solar Eclipse! Join us at GMARS and you might be able to get some last minute travel and eclipse photography tips! Or just come on out 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 (scratch that... make your reservation now THEN check out the video and archives)!

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.