The Caldwell objects
Contents within planetarium
- 34 galaxies
- 28 open clusters
- 18 globular clusters
- 13 planetary nebulae
- 7 hII regions
- 6 nebulae
- 1 supernova remnant
- 1 reflection nebula
- 1 dark nebula
Overlap with other object catalogs
- 96 New General Catalogue (NGC)
- 36 Melotte catalog
- 29 Principal Galaxies Catalogue
- 29 Collinder catalog
- 22 Uppsala General Catalog of galaxies (UGC)
- 13 PK planetary nebulae
- 12 Strasbourg-ESO Catalogue of Galactic Planetary Nebulae
- 8 Lynds' catalogue of bright nebulae
- 7 Uppsala General Catalog of galaxies addendum (UGCA)
- 7 Index Catalogue (IC)
- 2 Van den Bergh catalogue of reflection nebulae
- 2 Arp's catalog of peculiar galaxies
- 1 Sharpless catalog
- 1 Markarian galaxies