Messier 12 (North Up, East Left)
Messier 12, also known as NGC 6218 or the “Gumball Globular”, is a globular cluster in the constellation of Ophiuchus. It lies at a distance of ~19,000 light-years and has a diameter of ~80 light-years. The first and second images comprise 10 x Luminance (45 seconds each) and 5 x Red, Green and Blue (45, 48 and 39 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 60 degrees on 29 May 2016. 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 60 degrees on 21 July 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