Messier 15 (North Up, East Left)
Messier 15, also known as NGC 7078 and the "Great Pegasus Cluster", is a globular cluster in the constellation of Pegasus. It lies at a distance of ~50,000 light-years and has a diamater of ~250 light-years. The bright star to the north-northeast of the cluster is magnitude 7.6 HIP 106157. The bright star just outside the field in the first image is magnitude 6.1 HIP 106243. The first and second images comprise 15 x Luminance (30 seconds each) and 5 x Red, Green and Blue (30, 30 and 24 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 70 degrees on 10 October 2018. The fields of view are 32’ x 21’ and 18' x 12', respectively. The third and fourth images comprise 6 x Luminance (300 seconds each), 0.101m f/5.4 Tele Vue refractor with FLI ML16200 camera at an altitude of 75 degrees on 19 March 2017. The fields of view of the images are 132’ x 132’ (2.2 degrees square) and 42' x 42', respectively.
Hills Observatory: 1 January 2013 to 26 May 2020