NGC 7635, Bubble Nebula
© Trottier, HowardApproximately 12 hours of exposures
300 minutes in luminance (unbinned)
100 minutes in each of R, G, B, and Halpha (all with 2×2 binning).
Ten-minute subframes were taken in all channels.
The frames were captured over several nights during the summer of 2011 (between July 1 and September 3)
CDK17 telescope, operating with a focal reducer at f4.5
SBIG STL-4020M camera
Image capture: TheSkyX, MaxIm DL, and FocusMax.
Image processing was done entirely with PixInsight, with CCDInspector