Star party tonight on Mt. Tam

San Francisco Amateur Astronomers

Astronomy Day on Mt. Tam with Public Star Party

Astronomy Day Special Event with lecture followed by stargazing through telescopes set up and operated by SFAA club members.

This is a monthly event and is free. It is the best entertainment you can find in the bay area.

Sunset Image
Sunset: 8:07 PM
Waxing Crescent
Sky Chart - click to enlarge
What’s in the Sky
This Evening?

Information for Visitors:
April through October, Mount Tamalpais State Park and the SFAA host monthly astronomy lectures and star parties. The astronomy lectures start shortly after sunset at the Mountain Theater above Rock Springs. After the lecture the public is invited to view the stars through telescopes setup and operated by club members in the Rock Springs parking lot. Public observing following the lectures lasts about 1-1/2 to 2 hours.

Mt. Tamalpais State Park
Explore the Wonders of the Universe

our 23rd season on the mountain

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May 7 8:30pm Dr. Franck Marchis, SETI Institute/UC Berkeley
“Tiny Moons Around Small Asteroids”
Asteroid multiplicity is an astronomical prize for observers and theorists, constraining theories on the origin of the solar system.