SH 2-119 (from the Sharpless catalog of H II regions), also known as the Clamshell Nebula, is an emission nebula in the constellation Cygnus. It is fainter and not as frequently imaged as its western neighbour, the North America Nebula.

This image was captured over six nights between July 13 and August 1st. Two different dual narrow-band filters were used to capture the different wavelengths of the sulphur, hydrogen and oxygen emissions.

Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/195532/deep_sky/open-cluster/sh-2-119/by-drgfreeman

Image license: CC-BY-NC-SA 4.0.

#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #sh2-119 #sho #kstars #ekos #phd2 #DarkTable

ALT