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.

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Saturday, July 11, 7:30pm
Lithology Brewery Beer Tasting &
The IPA Improv Comedy Troupe
Lithology Brewing will be
offering tastings for our guests 21 and over with proper ID. They will be pouring 4 oz tastings of 2-3 varieties of their beer. This will be followed by the IPA Cmedy Troupe. IPA Comedy is a live improvised comedy group located on Long Island, NY. Their performances are in the vein of "Whose Line is it Anyway" with a focus on audience interaction. This is their 2nd appearance at Custer!
$15 non-mebers, $8 members, and $5 students




NASA TV


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: July 06, Two Thousand Fifteen
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