galacticsights

astrophotography

Sh2-170, Little Rosette Nebula

2021-10-10 / Click on image to enlarge

Sh2-170, also known as Little Rosette Nebula, is a small emission nebula with an embedded cluster of stars in the constellation Cassiopeia. It lies in the Perseus arm of our galaxy around 7.500 light-years distant. At its centre is a small, young star cluster. The bright star at the centre of the nebula is ionizing the surrounding hydrogen gas and causing the nebula to glow.


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Technical Details

LocationZollikerberg, Switzerland
CameraNikon DSLR D810A
TelescopeTS ONTC 12" f/4 Carbon Newton
OpticsTS 2,5" Wynne Coma Corrector
Focal Length1113mm
MountiOptron CEM120 Center-Balanced Equatorial Mount
AutoguidingMGEN-3 (Dithering)
FocuserMoonlite
Planetarium SoftwareStellarium
Image Session ControlAPT - Astro Photography Tool v3.88, ASCOM Platform 6
Lights97 x 120s (total 3h14'), ISO-1600, additional Biases, Flats, no Darks
Stacking SoftwarePixinsight 1.8, Drizzle 2x
Image ProcessingPixinsight 1.8