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This catalogue originated the usage of letters and catalogue numbers as identifiers. The capital "H" followed with the catalogue entry number represented the item. [4] In 1864, the CN was expanded into the General Catalogue of Nebulae and Clusters of Stars (GC) by John Herschel (William's son). [5] The GC contained 5,079 entries.
Catalogue of Nebulae and Clusters of Stars catalogued by William and Caroline Herschel; Catalogues published by John Herschel. General Catalogue of Nebulae and Clusters of Stars, catalogued by John Herschel; J.L.E. Dreyer's New General Catalogue and Index Catalogues, which expanded on the William, Caroline, John Herschel catalogues; Herschel ...
In this letter Mr. Mullaney suggested that William Herschel's original catalogue of 2,500 objects would be an excellent basis for deep sky object selection for amateur astronomers looking for a challenge after completing the Messier Catalogue. The Herschel 400 is a subset of John Herschel's General Catalogue of Nebulae and Clusters published in ...
Nebulae become visible if the gas glows, or if the cloud reflects starlight or obscures light from more distant objects. The catalogues that it may refer to: Catalogue des nébuleuses et des amas d'étoiles (Messier "M" catalogue) first published 1771; Catalogue of Nebulae and Clusters of Stars (William Herschel 'CN'/"H" catalogue) first ...
Download as PDF; Printable version; In other projects ... Astronomical catalogues of nebulae (3 C, ... Herschel 400 Catalogue;
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), [2] containing about 1,000 new objects.
NGC 6164, known as the Dragon's Egg Nebula, [1] [2] is an emission nebula located in the constellation Norma.The nebula was discovered by astronomer John Herschel in 1834, and is approximately 3,870 light years from the solar system.
0ES — Einstein Slew Survey, version 0 [1] 1A, 2A, 3A — Lists of X-ray sources from the Ariel V satellite [2] 1C — First Cambridge Catalogue of Radio Sources; 1ES — Einstein Slew Survey [1] [3] 1FGL, 2FGL [4] — Lists of gamma-ray sources from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope; 1RXH — ROSAT HRI ...