Dark nebulae in Cygnus
This beautiful area is just bellow the North America and Pelican Nebulae. The bright area at upper middle Right, is known as IC 5068.
I selected this as a target, since there is a beautiful dark dust line blocking light at front of the ionization zone and the area is not too commonly imaged.
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations,
added in about 50% weight.
Levels, curves and color combine in PS CS3.
Optics, Tokina AT-X 300mm camera lens at f2.8
Camera, QHY9 , a cooled astronomical camera
Guiding, Meade LX200 GPS and the Lodestar guider
Image Scale, ~3,5 arcseconds/pixel
Exposures H-alpha 19x1200s, binned 1x1
O-III 8x1200s, binned 2x2
S-II 6x1200s, binned 2x2
Total exposure time ~12h