The Caldwell catalogue is an astronomical catalogue of 109 objects. It includes star clusters, nebulae, and galaxies for observation by amateur astronomers. The list was compiled by Patrick Moore as a complement to the Messier catalogue.
The Messier catalogue is used by amateur astronomers as a list of deep-sky objects for observation. However, it was not compiled for that purpose. It does not include many of the sky's brightest deep-sky objects, such as the Hyades, the Double Cluster (NGC 869 and NGC 884), and the Sculptor Galaxy (NGC 253). The Messier catalogue was compiled as a list of known objects that might be confused with comets. As Messier got his list from observations in Paris, it did not include bright deep-sky objects visible in the Southern Hemisphere, such as Omega Centauri, Centaurus A, the Jewel Box, and 47 Tucanae.
References[change | change source]
- O'Mear, Stephen James 2002. (2002). The Caldwell Object. Cambridge University Press. ISBN 978-0-521-82796-6.
- "Caldwell Club Introduction". Retrieved 2006-09-08.
- Moore, Patrick 1995 (subscription required). Beyond Messier: the Caldwell Catalog. Sky & Telescope. p. 38. http://pqasb.pqarchiver.com/skyandtelescope/access/887305161.html?dids=887305161&FMT=CITE&FMTS=CITE&date=Dec+1995&author=Patrick+Moore&desc=Beyond+Messier%3A+The+Caldwell+Catalog. Retrieved 2006-08-29. Archive copy at the Internet Archive