Messier 54 (North Up, East Left)
Messier 54, also known as NGC 6715, is a globular cluster in the constellation of Sagittarius.  It has a diameter of ~170 light years and lies at a distance of ~49,000 light-years. This image comprises 10 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 on 24 August 2017. The fields of view of the two images are 32' by 21' and 18’ x 12’.
Hills Observatory: 1 January 2013 to 15 September 2018
COMETS COMETS
DEEP SKY DEEP SKY