Caldwell 45 spiral
Caldwell 45, is located in the constellation Bootes, and is best seen in summer.
Caldwell 45 is magnitude 10.2, and is 6 x 4 in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.
* One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions.
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