Caldwell catalogue: Difference between revisions
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| accessdate=2006-09-08}}</ref> Moore compiled a list of 109 objects – to match the commonly accepted number of Messier objects (he excluded M110<ref name="Sky & Telescope"></ref>) – and the list was published in [[Sky and telescope|Sky & Telescope]] in December 1995.<ref name="Sky & Telescope">{{cite journal |
| accessdate=2006-09-08}}</ref> Moore compiled a list of 109 objects – to match the commonly accepted number of Messier objects (he excluded M110<ref name="Sky & Telescope"></ref>) – and the list was published in [[Sky and telescope|Sky & Telescope]] in December 1995.<ref name="Sky & Telescope">{{cite journal |
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|title=Beyond Messier: The Caldwell Catalogue |
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|date=December 1995 |
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|url=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+Catalogue |
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Moore used his other surname (Caldwell) to name the list, as the first letter of "Moore" is already used for the Messier Catalogue.<ref name="The Caldwell Objects" /><ref>{{cite book |
Moore used his other surname (Caldwell) to name the list, as the first letter of "Moore" is already used for the Messier Catalogue.<ref name="The Caldwell Objects" /><ref>{{cite book |
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* [http://messier.seds.org/xtra/similar/caldwell.html The Caldwell Catalogue at SEDS] |
* [http://messier.seds.org/xtra/similar/caldwell.html The Caldwell Catalogue at SEDS] |
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* [http://www.astroleague.org/al/obsclubs/caldwell/cldwl.html The Caldwell Club] |
* [http://www.astroleague.org/al/obsclubs/caldwell/cldwl.html The Caldwell Club] |
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* [http://www.ngc891.com/modules.php?op=modload&name=Stars&file=constellation&catalogue=Caldwell Caldwell Star Charts, Images and more] |
* [https://web.archive.org/web/20061114001944/http://www.ngc891.com/modules.php?op=modload&name=Stars&file=constellation&catalogue=Caldwell Caldwell Star Charts, Images and more] |
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* [http://www.12dstring.me.uk/caldwellcatalogue.htm Searchable Caldwell Catalogue list] |
* [http://www.12dstring.me.uk/caldwellcatalogue.htm Searchable Caldwell Catalogue list] |
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* [http://www.space-and-telescope.com/CaldwellObjects.aspx Clickable Caldwell Object table]<!-- contains links back to Wikipedia articles --> |
* [http://www.space-and-telescope.com/CaldwellObjects.aspx Clickable Caldwell Object table]<!-- contains links back to Wikipedia articles --> |
Revision as of 22:04, 12 November 2016
The Caldwell Catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers. The list was compiled by Patrick Moore as a complement to the Messier Catalogue.[1]
While the Messier Catalogue is used by amateur astronomers as a list of deep-sky objects for observation, Moore noted that Messier's list was not compiled for that purpose and did not include many of the sky's brightest deep-sky objects,[1] such as the Hyades, the Double Cluster (NGC 869 and NGC 884), and the Sculptor Galaxy (NGC 253) (the Messier Catalogue was actually compiled as a list of known objects that might be confused with comets). Moore also observed that since Messier compiled 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.[1][2] Moore compiled a list of 109 objects – to match the commonly accepted number of Messier objects (he excluded M110[3]) – and the list was published in Sky & Telescope in December 1995.[3]
Moore used his other surname (Caldwell) to name the list, as the first letter of "Moore" is already used for the Messier Catalogue.[1][4] Entries in the catalogue are designated with a "C" and the catalogue number (1 to 109).
Unlike objects in the Messier catalogue, which are listed roughly in the order of discovery by Messier and his colleagues,[5] the Caldwell catalogue is ordered by declination, with C1 being the most northerly and C109 being the most southerly,[1] although two objects (NGC 4244 and the Hyades) are listed out of sequence.[1] Other errors in the original list have since been corrected: it incorrectly identified the S Norma Cluster (NGC 6087) as NGC 6067 and incorrectly labelled the Lambda Centauri Cluster (IC 2944) as the Gamma Centauri Cluster.[1]
Caldwell star chart
Number of objects by type in the Caldwell catalogue
Dark nebulae | 1 |
Galaxy | 35 |
Globular clusters | 18 |
Nebulae | 9 |
Star Clusters | 25 |
Star Clusters and Nebulae | 6 |
Planetary Nebulae | 13 |
Supernova remnant | 2 |
Total | 109 |
Caldwell objects
See also
- Messier Catalogue
- Herschel 400 Catalogue
- New General Catalogue (NGC)
- Index Catalogue (IC)
- Revised New General Catalogue (RNGC)
- Revised Index Catalogue (RIC)
References
- ^ a b c d e f g O'Meara, Stephen James (2002). The Caldwell Objects. Cambridge University Press. ISBN 978-0-521-82796-6.
- ^ "Caldwell Club Introduction". Retrieved 2006-09-08.
- ^ a b Moore, Patrick (December 1995). "Beyond Messier: The Caldwell Catalogue". Sky & Telescope: 38. Archived from the original (subscription required) on 2009-01-16. Retrieved 2006-08-29.
{{cite journal}}
: Cite journal requires|journal=
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ignored (|url-status=
suggested) (help) - ^ Mobberley, Martin (2009). The Caldwell Objects and How to Observe Them. Springer. ISBN 978-1-4419-0325-9.
- ^ Glyn Jones, Kenneth (1991). "Introduction". Messier's Nebulae & Star Clusters. Cambridge University Press. pp. 1–8. ISBN 0-521-37079-5.