Messier 22 (North Up, East Left)
Messier 22, also known as NGC 6656, is a globular cluster containing ~70,000 stars in the constellation of Sagittarius.  It has a diameter of ~75 light years and lies at a distance of ~7,800 light-years. The first and second images comprise 10 x Luminance (30 seconds each) and 6 x Red, Green and Blue (30, 31 and 26 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 35 degrees on 24 August 2017. The fields of view are 32' by 21' and 18’ x 12’. 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 35 degrees on 22 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 16 November 2018
COMETS COMETS
DEEP SKY DEEP SKY