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thumb Spiral Galaxy NGC 3982 displays numerous spiral arms filled with bright stars, blue star clusters, and dark dust lanes. It spans about 30,000 light years, lies about 60 million light years from Earth and can be seen with a small telescope in the constellation of Ursa Major.
The catalogue was compiled in the 1880s by J. L. E. Dreyer using observations mostly from William Herschel, and then subsequently expanded with two Index Catalogues (IC I & IC II), adding nearly 5,000 objects.
Objects in the southern sky are somewhat less well catalogued but many were observed by John Herschel. The NGC contained many errors which have for the most part been eliminated by the Revised NGC.