From this page you can get directions to the Custer Institute

plus links to some great places to eat and places to sleep after a long night of observing!


The Custer Observatory's phone number is 631-765-2626

For those with a GPS, we are located at:
1115 Main Bayview Road
Southold, New York 11971

For those who prefer Latitude and Longitude:

Latitude: (N)41.051922
Longitude: (W or -)72.434562

Latitude: (N) 41 3' 6.9186"
Longitude: (W or -) 72 26' 4.4226"

Our mailing address is:
PO Box 1204
Southold, New York 11971

In the map below, enter where you are coming from and find out how to get here!

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The observatory is open Saturday evenings from dark until midnight
(you can't see much unless it's dark!).
This roughly translates as:

  • 7pm-midnight January - March
  • 8pm-midnight April
  • 9pm-midnight May - August
  • 8pm-midnight September
  • 7pm-midnight October - December

From all points west of Riverhead Long Island, take the Long Island Expressway (I 495) east to Exit 73 (the last exit). Custer is another 19 miles east. Take RT 58 east for about 4 miles to the Traffic Circle. Continue straight out the other side. Road becomes RT 25 East. Continue for another 15 miles. Take your time, the local Police are very aggressive about speeding tickets. As you enter the Village of Southold, you will see signs for the Custer Institute and the Indian Museum on your right, just before an Empire Gas Station on your right as you are making a gradual left turn. Make a Very Sharp Right turn immediately after the EMPIRE Gas Station (roads form Y) onto Main Bayview Road. You will see our brick buildings with the silver dome on top, about 0.22 miles ahead on the left side of the road. The Indian Museum is directly across the street on your right. Parking is on the street. Please do not block the driveway on the left side of Custer. If you get lost, call (631) 765-2626.

The Southold Indian Museum is directly across the street and is also well worth visiting. It has a very extensive collection of artifacts. It is usually only open on Sundays from 1 to 4 PM during the Fall through Spring seasons. It is open Saturdays and Sundays from 1 to 4 PM during the Summer. 


Where to Eat & Sleep Near Custer

The North Fork boasts a variety of restaurants and cafes that offer everything from regional cuisine made using local farm grown products and seafood. And whether you're seeking a casual waterfront lunch served al fresco or a five-course dinner complete with local wine pairings, the North Fork presents a culinary experience not to miss. A popular speciality worth sampling is the fresh seafood and shellfish right from the surrounding Bay and Sound. Consult the listings and remember that reservations are recommended during the summer months.

Where to eat: Riverhead to Greenport




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Where to sleep: Riverhead to Greenport


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At Custer

Membership & Business

Sponsors, Clubs, & other Astronomical Organizations