Messier 71 (North Up, East Left)
Messier 71, also known as NGC 6838, is a globular cluster containing ~10,000 stars in the constellation of Sagitta.  It has a diameter of ~30 light-years, lies at a distance of ~13,000 light-years and is ~1 billion years old.  The first two images comprises 10 x Luminance (60 seconds each) and 6 x Red, Green and Blue (60, 60 and 48 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 75 degrees over two nights, 11 and 14 September 2017. The fields of view are 34’ x 23’ 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 80 degrees on 28 June 1027.  The fields of view 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