Messier 55 (North Up, East Left)
Messier 55, also known as NGC 6809, is a globular cluster in the constellation of Sagittarius.  It has a dismater of ~110 light-years and  lies at a distance of ~20,000 light-years. The first two images comprise 20 x Luminance (30 seconds each) and 5 x Red, Green and Blue (30, 32 and 28 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 30 degrees over two nights, 26 June and 3 July 2017.  The fields of view are 34’ x 23’ and 18’ x 12’ respectively. This 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 30 degrees on 18 September 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 14 August 2018
COMETS COMETS
DEEP SKY DEEP SKY