Sh2-82, Little Cocoon Nebula

2020-08-09 / Click on image to enlarge


Sh2-82, informally known as the 'little Trifid Nebula' and the 'Cocoon Nebula', is a relatively small emission nebula (seen as red) surrounded by a blue reflection nebula. A long dust lane runs from bottom to top through the image, blocking the light of most of the stars behind it.

Technical Details

LocationZollikerberg, Switzerland
CameraNikon DSLR D810A
TelescopeTS ONTC 12" f/4 Carbon Newton
OpticsTS 2,5" Wynne Coma Corrector
Focal Length1140mm
MountiOptron CEM120 Center-Balanced Equatorial Mount
AutoguidingPHD2 (Dithering)
Planetarium SoftwareStellarium
Image Session ControlAPT - Astro Photography Tool v3.81, ASCOM Platform 6
Lights61 x 120s (total 2h02'), ISO-1600, additional Biases, Flats, no Darks
Stacking SoftwarePixinsight 1.8, Drizzle 2x
Image ProcessingPixinsight 1.8