Welcome to the Custer Institute

The Custer Institute and Observatory is Long Island's oldest public observatory (est.1927). Open to the public every Saturday evening from dark until midnight, our staff of volunteers will give you a tour of the facilities and the night sky through our powerful telescopes. Custer has frequent lectures, classes,concerts, art exhibits and other special events. Consider our observatory for your next meeting or theme party.

Click for Tonight's Weather in Southold.



DaveBarnett took this amazing photo of the moon. Here are his comments and notes:
This past Sat night I took advantage of a brief period of clear skies to take this image of the area around Mare Serenitatis (the large flat area in the lower middle). This is a 7 panel mosaic which allows me to cover a large area using a small chip at high resolution.

To take this image I used the following:
1) Mount - Atlas EQG
2) Scope - Orion Mak 180 @ f/15
3) Camera - Imaging Source DMK41au @ 15 fps
4) Capture Software - IC capture
5) Stacking Software - AutoStakkert
6) Sharpening - RegiStax 6
7) Final Processing - Photoshop CS6




As the days get warmer, the night comes later. Remembering that Custer is run by volunteers, despite the time of darkness,
Custer will open at 7pm. Observing from the dome will begin after 8pm. See you then!




Weather Permitting:

Saturday Night Observing, open to public, dark to midnight, weather permitting Staff provide guided tours of the sky. Clouds, fog, rain, and full moon nights are not good nights. The less moon, the better for most observing. Check the moon calendar. Plan your visit by reading this.



Updated: August 24, Two Thousand Fifteen
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