Herschel 360 and Caldwell 49 (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 aldwell 50, which contains ~100 stars and lies at a distance of ~5,200 light-years. It is ~3 million ears old. The first image comprises 10 x Luminance (60 seconds each) and 5 x Red, Green and Blue (90, 90 and 72 seconds each), 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera at an altitude of 60 degrees on 27 January 2017.The field f view of the image is 34’ x 23’. The second image comprises 6 x Luminance (300 seconds each), 0.101m f/5.4 Tele Vue refractor with FLI ML16200 camera at an altitude of 65 degrees on 18 January 2018. The field of view is 132’ x 132’ (2.2 degrees square).
Hills Observatory: 1 January 2013 to 24 October 2020
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