Caldwell 75 (NGC 6124) is a open cluster located within the constellation Scorpius.
C75 is best viewed during Summer, is magnitude 5.8*, and can be viewed with naked eye (just barely). It is 29' in size. For reference, the full moon is 30' (arc minutes) in size.
- open cluster
- naked eye (just barely)
- 16 25.6
- -40 40'
* The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.