Welcome to the Peninsula Astronomical Society

The Peninsula Astronomical Society (PAS) is a group of Bay Area astronomy enthusiasts of all ages and backgrounds. We hold monthly meetings (always online, these days) featuring invited speakers and covering diverse topics in astronomy. Learn more about PAS.

Foothill Observatory Open 1st and 3rd Fridays

The Foothill College Astronomy Department and Peninsula Astronomical Society (PAS) have reopened public viewing programs at Foothill College Observatory the 1st and 3rd Friday of each month, from 9 p.m. to 11 p.m.

Since we are still dealing with COVID, we are adopting the following guidelines to enable safe operation of the Observatory for both our public visitors and our PAS operators.  We ask that visitors please agree to complying with these guidelines before visiting the Observatory, and to direct any questions to info@pastro.org.


  1. Full vaccination against COVID-19 is required to visit the Foothill College campus — This is a College requirement detailed on the Foothill College COVID-19 Behavioral Expectations page.
  2. Mask usage is required anytime visiting the Foothill College campus — This includes the Observatory, per the same college policy linked above in item 1.
  3. The number of visitors allowed inside the Observatory is reduced — To avoid overcrowding within the limited space, please wait outside the observatory until a PAS telescope operator lets you and your group inside. Once your group is done viewing through the telescope, you will exit the Observatory so that a new group may enter. 

More about FootHill Observatory | Map & Directions | Foothill Webcam

Recent Events

Lunar Eclipse Illustration by NASA
Image: NASA.gov

May 2022 –– Total Lunar Eclipse Party at Foothill Observatory May 15!

The Peninsula Astronomical Society and the Foothill College Astronomy department held telescope observations of the total lunar eclipse on Sunday, May 15 from 8:30 to 10:30 p.m.

We observed the eclipse using a range of portable telescopes, as well as the Foothill College Observatory. You can see a few photos on our PAS Flickr account: https://www.flickr.com/photos/pastronomical/

For background on lunar eclipses, and this one in particular, check out NASA’s What You Need to Know About the Lunar Eclipse.

Lick Observatory Image by Laurie Hatch
Image: Laurie Hatch

January 2022 –– Lick Observatory: Behind the Scenes
Watch on YouTube

PAS Board Member, VP and Lick Observatory Telescope Operator Rick Baldridge has been a Lick Staff Member since 2015 and shared an insider’s view of the observatory, decommissioned telescopes, and other locations on the mountain that are rarely visited or seen by the public, along with local history and other tidbits of information. 

See our Past Meetings page for more talks and recordings.

Quick Links

About PAS | PAS Membership | Foothill Observatory | Oak Ridge Observatory