Sh2 171 and NGC7822 Nebula and Open Cluster in Cepheus

Sh2 171 HaRGB

Here is the H-alpha channel alone:


Found in the constellation Cepheus. From Wikipedia:

NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800-1000 pc distant with the younger components aged no more than a few million years. The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45000 K and a luminosity ~100000 times that of the Sun. The star is one of the primary sources illuminating the nebula and shaping the complex's famed pillars of creation-type formations, the elephant trunks.

Camera: Apogee U16M camera w  Astrodon GenII filters
Scope: AP155EDF Refractor w Robofocus
42 x 20 min H-Alpha; 18x10 min RG, 12x10 min B -> Total exposure time 22 hours!
Mount: Paramount ME guided w ST-402 and eFinder
Image acquisition via CCD-Commander and TSX
Processed in PixInsight

Lucknow, Ontario
July 2017