Custer Institute and Observatory is Long Island's oldest public observatory - open from 8 pm to midnight on Saturdays!
Explore the night sky with our volunteers, powerful telescopes, tours, and live events.
Join us every Saturday night for public observing sessions, where you can explore the cosmos through our powerful telescopes.
When the skies are clear, our knowledgeable volunteer staff will guide you on a tour of the stars, planets, and beyond.
Saturday Night Public Observing
Doors open at 8 PM
Observing from dark until midnight (weather permitting)
All observing takes place outdoors—please dress appropriately. Seasonal hours and times of darkness may affect skywatching times.
EVENTS
Outdoor Events: Most events take place on our lawn. We encourage you to bring a blanket or chair to make your experience more comfortable.
Rain Dates: Rain dates (when necessary) will be noted on our website, social media, and/or Eventbrite for your convenience.
Gene Casey & The Lone Sharks
Saturday, August 29. 8:00pm
A local legend with a self-described “rough-hewn and honest” style, Casey helped develop the North Fork music scene before one existed and has developed a reputation for his fun, upbeat performances that bring the crowd to their feet (The Sound of the North Fork, Northforker June2019).
Gene’s original music met with great acclaim and received significant local and international radio play. Several of his roots-drenched songs have been used in “A Prairie Home Companion” and on the soundtracks to television and feature films, including “Justified” and “Sons of Anarchy”, the 2012 thriller “The Tall Man” starring Jessica Biel, the 2013 release “The Killing Season” starring Robert DeNiro, and Rob Reiner’s “Being Charlie.”
In 2015, Gene, “the premier barroom troubadour of Eastern Long Island” (Josh Alan Friedman) received the Long Island Sound Award by the L.I. Music Hall of Fame, “for contributions to the Island’s musical landscape.”
Following the concert, Observatory staff will provide guided tours of the night sky (weather permitting) through our many telescopes on site, including the apochromatic Zerochromat telescope in our historic observation dome.
$25 Adult, $20 Observatory Member, Children Under 16 FREE. Attendance will be limited so advanced registration is strongly encouraged. A rain date for this program will be scheduled as needed depending on weather. Event changes will be emailed to the address provided at checkout, posted at www.custerobservatory.org and on the Eventbrite page. We recommend checking for weather updates before arriving.
Please bring a blanket or chair to enjoy this outdoor presentation.
Everything Makes Sense
Saturday, September 5. 8:30pm
Experience the dark and quiet of the North Fork while being immersed in light and sound. Join us on September 5th under the starry sky of Custer Observatory, as ambient duo Worst Night Ever premieres “Everything Makes Sense," a composition that translates data sets into ambient music. This multimedia live performance features original projections and poetic, guided interludes illuminating the data points used to compose the piece - everything from the water used to power A.I., to the amount of “Happy Trees” painted by Bob Ross, to Pokémon Hit Points.
Following the concert, Observatory staff will provide guided tours of night sky objects (weather permitting) through the many telescopes on site, including the apochromatic Zerochromat telescope in our historic observation dome.
$25 Adult, $20 Observatory Members, Children Under 16 FREE. Attendance to this in-person performance will be limited - reserve your seats early!
Please bring a blanket or chair to enjoy this outdoor presentation.
ABOUT THE ARTISTS:
The ambient duo Worst Night Ever (Long Island natives Daniel Giachetti and Arthur Fleischmann) have been writing and performing music together for decades. Together, their various musical projects have earned them a 2025 NYFA/QAF sound art grant, licensed songs to multiple TV series, soundtracked a runway show for Neiman Marcus, won the 33 1/3 book series home recording contest, played Carnegie Hall with Jon Batiste, charted on college radio, and toured everywhere from the UK to Dubai.
Arthur Fleischmann has toured internationally and recorded with artists across multiple genres, most recently joining Jon Batiste’s American Symphony at Carnegie Hall. As a production and stage manager he has helped coordinate and produce world-class music festivals including the Essence Festival of Culture, Sol Blume, and Afropunk. Arthur is the Master Electrician for the Emmy Award-winning The Daily Show.
Daniel Giachetti is a musician and visual artist. A graduate of School of Visual Arts, he has art-directed music videos that screened at numerous film festivals including Barebones and SVA Afterschool Special, and won best music video in Spain’s Erotic & Bizarre Art Festival. His design work has appeared at the BAU Gallery in Beacon as well as being sold at the Queens Museum of Art.
Please note that this is a weather-permitting event. Event changes will be emailed to the address provided at checkout and posted at www.custerobservatory.org and on this Eventbrite page. Please check for weather updates before arriving.
Nancy Atlas (Live!)
Saturday, September 12. 7:30pm
Nancy Atlas makes a rare North Fork appearance at Custer Observatory. This is an opportunity not to be missed!
Nancy Atlas and her band have been dominating the East End Music scene for quite some time. Known for her raw, live performances and stellar songwriting Nancy and her band have opened for almost everyone under the sun. To name a few: Elvis Costello, Lucinda Williams, Toots and the Maytals, Jimmy Buffett, Crosby, Stills and Nash… the list goes on and on.
Sweating alongside Nancy Atlas on any given night is her right-hand men of 28 years, Johnny Blood on Lead Guitar and Brett King on Bass. In the spring of 2023, the incomparable NYC powerhouse Denny McDermott joined in on Drums, Greg McMullen on Pedal Steel, and Killer Joe Delia paired off on keys, organ, and back up vocals. Together they have been reigniting a band that has been throwing down for over a quarter of a century and based on the last year of shows… there is no end in sight any time soon!
Following the concert, Observatory staff will provide guided tours of the night sky (weather permitting) through our many telescopes on site, including the apochromatic Zerochromat telescope in our historic observation dome.
Note: This will be a rain or shine event! A VIP ticket will guarantee you a spot regardless of the weather, and if held outside, you'll have a front row seat to the concert!
$50 VIP Ticket, $35 General Admission, $25 Observatory Members, Children Under 16 FREE. General admission tickets will go on sale the week of the concert and can also be purchased at the door. Advanced registration for VIP attendance is limited so reserve your seats early to secure a spot!
Please bring a blanket or chair to enjoy this outdoor presentation.
International Observe the Moon Night 2026
Saturday, September 19. 6:30pm - Midnight
Join us in this annual celebration of the moon with music, stargazing and guest speaker Randall DiGiuseppe!
In cooperation with NASA, Custer Observatory will be participating in this special International Observe the Moon Night event. This is a worldwide celebration of lunar science and exploration held annually since 2010. One day each year, everyone on Earth is invited to observe and learn about the Moon together, and to celebrate the cultural and personal connections we all have with our nearest celestial neighbor.
International Observe the Moon Night is sponsored by NASA’s Lunar Reconnaissance Orbiter mission and the Solar System Exploration Division at NASA’s Goddard Space Flight Center, and other NASA and astronomical organizations that encourage observation, appreciation, and understanding of our Moon and its connection to planetary science and exploration.
This year's event is an even bigger celebration than in years past with music, stargazing and a special presentation by our own Randall DiGiuseppe!
6:30PM - CONCERT: Songs the Moon Sang to Me
A live performance of the original composition by Long Island composer JD Verbeck, this piece is as much about the Earth and humanity as it is about the Moon. In December of 1968, three men achieved a view of the Earth that had only been dreamed of before: the Earth, floating alone in a black void. This image had the power to transform how we see our position in the universe, how we treat one another, and how we treat our planet. Scored for violin, flute, and French horn, "Songs the Moon Sang to Me" explores these ideas through music, evoking both the surreal and desolate landscape of the lunar environment and the existential reality of our place in the cosmos.
8:00PM - TALK: Wonders of the Autumn Night Sky, Part One: Artemis & Andromeda
Fall 2026 is rife with special celestial events, starting with this evening’s International Observe the Moon Night! To celebrate this occasion, Custer’s own Randall DiGiuseppe will be making a special stop along his guided tour of the Autumn night sky to explore our closest celestial neighbor, the Moon. The tour resumes with an in-depth look at the constellations that make up the ancient Greek tale of Perseus, Andromeda and the Sea Monster. Join us for a memorable night of moon craters, star clusters and neighboring galaxies. Oh, and a sea monster!
7:30PM - MIDNIGHT - If the weather is clear, observatory staff will be providing guided tours of the Moon and other night sky objects with the many telescopes on site throughout the night, including the apochromatic Zerochromat telescope in our historic observation dome.
$10 Adult, $5 Children Under 16 , Observatory Members FREE. Your donations allow Custer Observatory to continue to offer programs like this and are greatly appreciated. This will be a rain or shine event. Stargazing is weather-permitting.
Please bring a blanket or chair to enjoy the outdoor presentation.
PROGRAMS + RESOURCES
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WEATHER
Clear Skies Ahead!
Find the latest weather forecasts tailored for astronomers, including cloud cover, precipitation, dewpoint, wind conditions, and Moon phases. Our easy-to-read key helps you decide if it’s a perfect night to bring out your telescope!
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THE MUSIC PROJECT
Bringing music and stargazing together at Long Island’s oldest public observatory, tMP blends the performing arts with science and discovery. A unique stargazing experience follows each performance where audiences are invited to explore the night sky with guidance from our expert volunteer staff, using our historic observation dome and an array of on-site telescopes.
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WHAT'S UP?
Skywatching highlights each month, provided by NASA.
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RESOURCES
Whether you're a seasoned astronomer or just starting your journey into the cosmos, our collection of resources will help guide you.
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SCHOLARSHIP
Supporting the Next Generation of Scientists & Innovators. Available to High School Seniors throughout the North Fork.
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HONEY BEE CLUB
Custer's Honey Bee Club is an educational program focused on environmental sustainability and honeybee stewardship.
Send an email to learn more.
Support the North Fork Dark Sky Coalition
Take action to protect our night skies:
Pledge to turn off unnecessary lights and spread awareness,
Update Your Lighting by using dark sky-friendly fixtures and warm-toned bulbs, and
Become a Partner to advocate, educate, and support local Dark Sky initiatives.
Take the pledge and join the North Fork Dark Sky Coalition
AFFILIATIONS + SUPPORTERS + PARTNERS
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