Herschel 4 and Caldwell 22 (North Up, East Left)
Herschel 4, also known as NGC 7662 and Caldwell 22, is a planetary nebula in the constellation of Andromeda.  It lies at a distance of ~3,900 light-years and has a diameter of ~0.3 light-years. This image comprises 15 x Luminance (30 seconds each) and 10 x Red, Green and Blue (30, 30 and 24 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 75 degrees on 29 July 2017. The fields of view of the two images are 34x' x 23' and 18’ x 12’ respectively.
Hills Observatory: 1 January 2013 to 6 May 2018
COMETS COMETS
DEEP SKY DEEP SKY