The free lecture Galileo’s Telescopes and Observations – The Great Inflection Point in the History of Science presented by San Francisco Amateur Astronomers is Tuesday, March 21, 2017 from 7:45 pm to 9:30 pm at the Presidio Officers’ Club. Galileo Galilei significantly improved the optical performance of the telescope and began a series of celestial observations.
“This talk will lay out the key developments in the history of science related to astronomy preceding Galileo, describe in detail what is known about the optics and construction of his telescopes, and then discuss his observations and how they radically changed the science of astronomy.”

Presidio Officers’ Club
50 Moraga Avenue
San Francisco, 94129
(415) 561-4400

Tuesday, March 21, 2017 from 7:45 pm to 9:30 pm
Admission: Free

Presidio Map (PDF)
Public Transit

Space is big. You just won’t believe how vastly, hugely, mind- bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist’s, but that’s just peanuts to space. — Douglas Adams

San Francisco Amateur Astronomers (SFAA) present its January San Francisco City Star Party this Saturday 14th from 6:00 pm.

SFAA members provide telescopes for you to view planets/stars.

Directions/Parking: At the intersection of Point Lobos Avenue and El Camino Del Mar, travel northbound on El Camino Del Mar, passing Seal Rock Drive on your right and you will see a “Not a Through Street” sign and another sign for Fort Miley. Continue until the road ends in a parking lot.

Admission: Free

Saturday, January 14, 2017
6:00 pm to 10:00 pm

Note: bad weather or overcast skies will cancel the event.