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Ptolemy's Cluster in Scorpio ( Messier 7, NGC 6475 ). Visible to the naked eye as a small bright patch in the sky, this open cluster is around 980 light years away with around 80 stars within a area of 25 light years or so. Links: 500px.com/MikeODay photo.net/photos/MikeODay Details: RA 17h 54m, Dec -34deg 47'. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector. Nikon D300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. 18 x 30 sec ISO800. 23 May 14 Reprocessed Pixinsight 8 Sep 2015 This was one of my first ever asto image captures taken shortly after I bought my scope. I reprocessed it today using Pixinsight. Here is the original version ...