NGC 7538
NGC 7538

NGC 7538 crop Crop 1.3X NGC 7538 Ha  Ha

0bject NGC 7538, Sh2-158, Sh2-159 in Cassiopeia
Date October 5-18, 2014
Exposure HaLRGB 585:35:40:30 (cropped; 11.5 hours)
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
Comments Moderate to good seeing; acquired with CCD Commander