Caldwell object C42 is a globular cluster located within the constellation Delphinus.
Caldwell C42 is best viewed during Fall, is magnitude 10.*, and can be viewed with small telescope. It is 2.8° in size. For reference, the full moon is 30' (arc minutes) in size.
- globular cluster
- small telescope
- 21 01.5
- +16 11'
* The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.
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