The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC ) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888 as a new version of John Herschel 's General Catalogue of Nebulae and Clusters of Stars . The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies , star clusters , emission nebulae and absorption nebulae . Dreyer also published two supplements to the NGC in 1895 and 1908, known as the Index Catalogues , describing a further 5,386 astronomical objects.

Objects in the sky of the southern hemisphere are catalogued somewhat less thoroughly, but many were observed by John Herschel or James Dunlop . The NGC had many errors, but an attempt to eliminate them was initiated by the NGC/IC Project in 1993, after partial attempts with the Revised New General Catalogue (RNGC) by Jack W. Sulentic and William G. Tifft in 1973, and NGC2000.0 by Roger W. Sinnott in 1988. The Revised New General Catalogue and Index Catalogue was compiled in 2009 by Wolfgang Steinicke .

The original New General Catalogue was compiled during the 1880s by John Louis Emil Dreyer using observations from William Herschel and his son John , among others. Dreyer had already published a supplement to Herschel's General Catalogue of Nebulae and Clusters (GC), [1] containing about 1,000 new objects. In 1886, he suggested building a second supplement to the General Catalogue , but the Royal Astronomical Society asked Dreyer to compile a new version instead. This led to the publication of the New General Catalogue in the Memoirs of the Royal Astronomical Society in 1888. [2] [3]

University of California, Irvine General Catalogue.

New General Catalogue - Wikipedia

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