Stockton Astronomical Society

Stockton Astronomical Society The Stockton Astronomical Society is dedicated to promoting knowledge of astronomy and related sciences.

They hold monthly sky viewing events, community star parties, and strive to make astronomy accessible and fun for everyone.

New nova.Baldy.
08/26/2026

New nova.
Baldy.

Does the Moon have a handle?This photo of the Moon was taken at the recent Astronomy In The Park at Oak Grove Regional P...
08/24/2026

Does the Moon have a handle?

This photo of the Moon was taken at the recent Astronomy In The Park at Oak Grove Regional Park on August 22, 2026 hosted by the Stockton Astronomical Society. The lower right edge of the Moon appears to have a handle big enough to carry the whole Moon. Here’s the real explanation: The rim of Sinus Iridum, the Bay of Rainbows, stands out in brilliant light well before the crater floor emerges from darkness, giving it the look of a handle. Photo credit- Kasey Foley, Stockton Astronomical Society.

The Stockton Astronomical Society will be at Oak Grove Regional Park tomorrow night Saturday 7/18 at sunset around 8:30p...
07/17/2026

The Stockton Astronomical Society will be at Oak Grove Regional Park tomorrow night Saturday 7/18 at sunset around 8:30pm. Rumor has it we may have some rather large Obsession telescopes available with a 20 inch and/or 30 inch diameter primary mirror similar to the scope in the photo. They should make for great views. See you there. Clear skies.

Venus reappearing on the bright side of the Moon at 12;46.
06/17/2026

Venus reappearing on the bright side of the Moon at 12;46.

Venus about to be occulted by the Moon, 11:34 this morning. shot by Jeff Baldwin, Lathrop. 100mm diameter 500 mm focal l...
06/17/2026

Venus about to be occulted by the Moon, 11:34 this morning. shot by Jeff Baldwin, Lathrop. 100mm diameter 500 mm focal length refractor, Canon EOS t2i Costco special, iso 100, 1/2000 second.

Here is the Whirlpool Galaxy (M51) in the constellation Canes Venatici about 28 million light-years away and Globular Cl...
06/15/2026

Here is the Whirlpool Galaxy (M51) in the constellation Canes Venatici about 28 million light-years away and Globular Cluster (M13) in the constellation Hercules about 23 thousand light-years away. The galaxy was imaged for 82 minutes and the cluster for 38 minutes. Equipment was the Svbony 127mm Maksutov telescope, ZWO ASI585MC camera, and ZWO AM5 mount. Location was Peddler Hill in Eldorado National Forest east of Sacramento California Saturday 6/13/26.

Bode’s Galaxy about 12 million light-years away taken with Svbony Maksutov 127mm aperture telescope. It was shot with 0....
06/03/2026

Bode’s Galaxy about 12 million light-years away taken with Svbony Maksutov 127mm aperture telescope. It was shot with 0.65x reducer for 975mm fl at f/7.68. M81 was only 40 minutes of integration time stacked with 10 bias, 10 flat, and 10 dark calibration frames. Camera was uncooled ASI385MC on AM5 mount.

Cigar Galaxy taken with a new small lightweight Svbony Maksutov telescope. It has 127mm aperture, 1500mm fl at f/11.8. ...
05/31/2026

Cigar Galaxy taken with a new small lightweight Svbony Maksutov telescope. It has 127mm aperture, 1500mm fl at f/11.8. M82 was only 20 minutes of integration stacked with 10 bias, 10 flat, and 10 dark calibration frames. Camera was uncooled ASI385MC on AM5 mount.

Copernicus crater taken with a new small lightweight Svbony Maksutov telescope. It has 127mm aperture, 1500mm fl at f/11...
05/31/2026

Copernicus crater taken with a new small lightweight Svbony Maksutov telescope. It has 127mm aperture, 1500mm fl at f/11.8 but shot with a 0.65x reducer for 975mm fl at f/7.6. This Moon image is 75% of stacked frames from a 2 minute video. Camera was uncooled ASI385MC on AM5 mount.

Two photos taken yesterday near Valley Springs, CA. First is the Heart & Soul Nebulas. It has about 50 minutes of inte...
05/11/2026

Two photos taken yesterday near Valley Springs, CA. First is the Heart & Soul Nebulas. It has about 50 minutes of integration time. Second is the Elephant Trunk Nebula. It has about 90 minutes of integration time. Both had 90s subframes and shot with Rokinon 135mm F/2 lens and ZWO ASI 2600MC Duo camera.

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Stockton, CA

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+12093510206

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