|| NGC7635 (Bubble Nebula) RA 23:20.2 Dec +61:11
||90 minutes (30 X 3 minutes)
||Canon 60Da DSLR
|| 200mm SkyWatcher f/5 Newtonian reflector with
Paracorr for a total focal length of 1150 mm
St. Croix, Nova Scotia
||This image was processed entirely in Images Plus
5.75. Calibration, stacking, initial arcsin stretch in Images Plus .
Next the feature mask tool was used to separate the stars from the rest
of the image. The saturation on the star layer was boosted and the size
of the stars was reduced. Masked noise reduction, sharpening and
contrast enhancement applied to the nebula layer with alternating
softlight and screen combine modes used on several curve adjustments.
The layers were then recombined and the result binned and cropped. The
wide field shot was processed using more conventional approaches with
lots of noise reduction.