B173-174 Dark nebulae in Cepheus

B173 and 174 Ha Ha data 

0bject B173 and 174 Dark nebulae in Cepheus (CED 199, lower left)
Date September 30 - October 2, 2015
Exposure HαRGB 645:60:60:60 (cropped; 13.75 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,  AstroActions, NIK Dfine2
Comments Moderate to good seeing with moonlight; acquired with CCD Commander