Herschel 360 and Caldwell 50 (North Up, East Left)
Herschel 360 comprises two objects in the constellation of Monoceros.  NGC 2237, also known as Caldwell 49,  is an emission nebula with a diameter of ~65 light-years.  It is ionized  by the open cluster NGC2244, also , also known as Caldwell 50, which contains ~100 stars and lies at a distance of ~5,200 light-years.  It is ~3 million years old. This image comprises 20 x Luminance (10 seconds each) and 10 x Red, Green and Blue (15, 15 and 12 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 55 degrees over two nights, 26 and 29 January 2017. The field of view of the image is 34’ x 23’. The nebula measures 80'×60'.
Hills Observatory: 1 January 2013 to 3 November 2019