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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.
The Herschel 400 catalogue is a subset of William Herschel's original Catalogue of Nebulae and Clusters of Stars, selected by Brenda F. Guzman (Branchett), Lydel Guzman, Paul Jones, James Morris, Peggy Taylor and Sara Saey of the Ancient City Astronomy Club in St. Augustine, Florida, United States c. 1980.
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 400 Catalogue, a subset of the Herschels' catalogues for amateur astronomers
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 ...
D — James Dunlop (A catalogue of nebulae and clusters of stars in the southern hemisphere, observed at Parramatta in New South Wales) DA — Dominion Observatory List A [16] Danjon — Andre Danjon (double stars) Danks — (open star clusters) (for example: Danks 1 & 2, located near the northeastern Centaurus section of the Coalsack Nebula)
Boss General Catalogue, an astronomical catalogue compiled by Benjamin Boss and published in the U.S. in 1936 General Catalogue of Nebulae and Clusters , an astronomical catalogue by John Herschel expanding on the work of his father William Herschel
Herschel published catalogues of nebulae in 1802 (2,500 objects) and in 1820 (5,000 objects). The resolving power of the Herschel telescopes revealed that many objects called nebulae in the Messier catalogue were actually clusters of stars. On 13 March 1781 while making observations he made note of a new object in the constellation of Gemini.
Wikipedia:WikiProject Astronomical objects/Catalogues/Abell Catalog of Planetary Nebulae; Wikipedia:WikiProject Astronomical objects/Catalogues/Atlas of Peculiar Galaxies