
Ptolemy's cluster (M7) is a site of star formation.
Telescope: WO FLT-98, F=603mm
Mount: AP1200GTO
Camera: Canon EOS 6D
Extra: WO FLAT-IV
Date taken: 20160728
Exposure Time (total): 48' 0"
Exposure Sub: 48x60s, 6400ISO
Naked eye limiting magnitude: 7mag
Outside temperature: 1°C
Location: Tivoli, Namibia
GPS coordinates: 23°28'60" S 18°1' E"
Elevation: 1331meter
Image resolution: 5451x3491
Image field: 3.99° x 2.56°
Image center: 17h 54m 8s, -34° 36' 41"
Image orientation: -105.279°
Image scale: 2.64 arcsec/px