Sh2-188
Sh2-188

 

0bject Sh2-188 Planetary nebula in Cassiopeia (also Simeis 22)
Date November 2, 2014
Exposure HαRGB  300:30:30:30 (Hα + R 80/20, cropped)
Camera STL11000M with AstroDon Gen II filters (water-assisted cooling)
Telescope ASA 10N f/3.7 on AP900GTO CP3
Guiding Remote guide head with MiniBorg 50 mm
Processing MaximDL, Photoshop CS6, GradientXterminator, AstroActions, NIK Dfine2
Comments Good seeing but with 1st quarter moon high in sky; acquired with CCD Commander