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Light pollution
Gotham's skycrapers give off both heat and light — two factors that makes watching stars in Manhattan a real ordeal for both amateurs and professionals astronomers.
PHOTO: Gabriel Sama.

 

For many New Yorkers, the energy of the city evokes feelings of excitement and anticipation which draws them in. But for astronomers the enduring glow is an obstacle and considered pollution.

"Most people don't consider light to be a form of pollution since it's isn't harmful, but astronomers are plagued by it," says Sam Gelman, professor of astronomy at Hunter College in New York City. "Areas that were once 'dark sky' locations are increasingly being encroached upon by unshielded outdoor lighting."

The problem of light pollution is so extreme in New York City that the Milky Way has not been viewed in the city since Ulysses S. Grant was president, according to the Columbia University department of astronomy.

Beyond just this main frustration, astronomers in the city also struggle with the overall issue of air pollution. Smoke, engine exhaust, and dust all work to obscure the night sky, says Gelman. Even the heat given off by the buildings and cars contribute to the unsteadiness of the air that today allows astronomers and amateurs to view only the brightest stars and planets from locations within the city limits.

The basic structure of Manhattan with its tall buildings concentrated in relatively tight quarters creates an obstruction for viewing the horizon as well as a significant portions of the sky, said Gelman. Combine this with the constant flow of air traffic, amateurs and professionals can easily mistake a radio tower or the blinking lights on a jet preparing to land at LaGuardia for a star.

These problems often drive many dedicated and determined stargazers to seek other locations outside the city in Long Island or parts of New Jersey.

Though the conditions limit the viewing opportunities, the astronomy departments at Columbia University and Hunter College survive in New York City since the scientists and academics at these institutions conduct their research outside of the city.

These professionals travel regularly to observatories in more ideal locations such as the desert or mountain ranges. After collecting their research, these astronomers then return to their New York offices.

Despite the hurdles, Gelman still admits that on a clear night a person could view the moon, some of the planets, even some brighter stars without a telescope.

"A few years ago, Comet Hale-Bopp was bright enough to be seen from midtown Manhattan," says Gelman.

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Places to Watch Stars in NYC

Hayden Planetarium, Manhattan

Andrus Planetarium, Yonkers

Vanderbilt Planetarium, Long Island

Van Cortland Park, the Bronx

Carl Schurz Park, Manhattan

Floyd Bennett Field, Brooklyn

Great Kills, Staten Island

Empire State Building, observation deck, Manhattan

Source: Columbia University's department of astronomy/AAA

Virtual sky
Hayden Planetarium
The Hayden Planetarium located on 81st Street and Central Park West reopened in February 2000 and once again provides another alternative for star gazing in New York City.
PHOTO: Stephen Lucey  

The Other AAA

For more than 70 years, the Amateur Astronomy Association in New York City has brought together individuals who share a common passion and enjoy sharing their interests in astronomy with others. Since its first meeting on May 10, 1927, the association focused on getting members outdoors to observe the stars. The AAA has grown into more than just a collection of stargazers. Today the organization sponsors classes and seminars at its headquarters on Park Avenue that allow its more than 350 members to learn the basics of astronomy and observation techniques. In addition, the group also organizes monthly gatherings at locations throughout the five boroughs.


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