M7, Ptolemy Cluster in Scorpius

M7, or the Ptolemy cluster is the southernmost of the Messier objects. There are 80 or so, mostly blue stars embedded in the cluster which itself is surrounded and immersed in this stretch of the Milky Way.

NGC 6475 Ø80', m3.3
Centre RA: 17h 53m 45s
Centre Dec: -34°47' 50"'
Size: 3.34 x 2.22 deg
Image Scale: 2.43 arc sec/pixel
Orientation: Up is 9.82 degrees E of N
Exposure: 50 x 300"
Total exposure time 250 minutes
Telescope: Takahashi Sky 90 @ f/4.5 (fl=405mm)
Camera: ZWO ASI 071MCPro CMOS
Mount: Paramount MX on permanent pier
Location: Deep Southern Skies Observatory, Federal NSW Australia on 26 Aug 2021.