The Stockton Astronomical Society (SAS) meets on the second Thursday of the month in the Olson Hall, Room 120 at the University of the Pacific at 7:30 pm. Visitors are welcome.

    A monthly star party is usually held on a Saturday near a new moon.


Coming Up     [view SAS Sky Calendar  (120.8KB PDF file) September 2014]

Monday, September 8 -- Full Moon
Thursday, September 11 at 7:30 pm -- Regular Meeting of SAS in Olson Hall, Room 120, at UOP
Friday, September 19 at 8:00 pm -- Sky Tours at Delta College -- (Athletic-1 parking lot)
Saturday, September 20 at sunset -- Highway 4 Star Party - OR -
Saturday, September 20 at sunset -- Pardee Observation Point Star Party
Tuesday, September 23 -- New Moon
Saturday, September 27 at 7:00 pm -- Public Star Party at Oak Grove Regional Park
Saturday, September 27 at sunset -- High Altitude Star Party

Wednesday, October 8 -- Total Lunar Eclipse (first contact at 2:14 am)
Thursday, October 23 -- Partial Solar Eclipse (first contact at 1:56 pm)


SAS News

SAS September 11th Meeting

Stockton Astronomical Society presents

SAS Member Jeff Baldwin, M. Ed.  

The Basics of Star Testing Telescopes

Star testing telescopes has many purposes. One is to test optics for errors while figuring the mirror.

A more common use to non-ATMers is to evaluate your telescope optics. You can adjust your collimation, discover and repair structural issues, and evaluate seeing conditions, just to name a few. This talk will be non-rigorous, non-mathematical, and user-friendly.

If time permits and you havenít thrown me out yet, a short discussion on eyepieces will help us understand simple eyepiece concepts, such as magnification, exit pupil, magnification range, and how the dang things work in the first place.

There will be a test afterwards, so bring your scientific calculator or slide rule. Just kidding, itíll be concept time, not arithmetic time. [Slide rule? What the heck is that?]...JB

...Dennis LeClert, Program Director


What's to See Tonight

Astronomy in the News

Thinking of Buying a Star?

California's First Astronomical Observatory

Picture of the Day

Weather Information

From the US Naval Observatory

From NASA Space Place Program


The Stockton Astronomical Society (SAS) was founded as a non-profit California corporation to foster interest in and promote the general knowledge of astronomy and related sciences.

Member: International Dark-Sky Association
Member: Astronomical Association of Northern California
Member: Night Sky Network



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