Home      Discussion      Topics      Dictionary      Almanac
Signup       Login
Revised New General Catalogue

Revised New General Catalogue

Discussion
Ask a question about 'Revised New General Catalogue'
Start a new discussion about 'Revised New General Catalogue'
Answer questions from other users
Full Discussion Forum
 
Encyclopedia
The Revised New General Catalogue (RNGC) and companion Revised Index Catalogue (RIC) is a revision to the original New General Catalogue
New General Catalogue
The New General Catalogue of Nebulae and Clusters of Stars is a well-known catalogue of deep sky objects in astronomy. It contains 7,840 objects, known as the NGC objects...

 and Index Catalogue
Index Catalogue
The Index Catalogue —also known as the Index Catalogue of Nebulae, the Index Catalogue of Nebulae and Clusters of Stars, IC I, or IC II— is a catalogue of galaxies, nebulae and star clusters that serves as a supplement to the New General Catalogue...

s made by J. L. E. Dreyer. Some of the brightnesses of objects measured by Dreyer were not accurate or the description of the object was not accurate. Therefore they were revised. Most planetarium computer programs use the RNGC and the RIC as a source for their Deep sky object
Deep sky
Deep-sky objects are astronomical objects other than individual stars and solar system objects . The classification is used for the most part by amateur astronomers to denote visually observed faint naked eye and telescopic objects such as star clusters, nebulae and galaxies.-Origins and...

 dataset. It was compiled by Jack W. Sulentic and W. G. Tifft, yet still overlooks many errata from Dreyer and doesn't attempt to check for correct identifications for many "wrong" objects.

See also

  • List of NGC objects
  • Catalogue of Nebulae
    Catalogue of Nebulae
    The Catalogue of Nebulae was first published in 1786 by William Herschel. It was eventually expanded by his son John Herschel into the General Catalogue of Nebulae and Clusters, and further expanded by J. L. E...

  • General Catalogue of Nebulae and Clusters
  • Index Catalogue
    Index Catalogue
    The Index Catalogue —also known as the Index Catalogue of Nebulae, the Index Catalogue of Nebulae and Clusters of Stars, IC I, or IC II— is a catalogue of galaxies, nebulae and star clusters that serves as a supplement to the New General Catalogue...


:Category:NGC objects
:Category:IC objects

External links