||NGC 6888 (Crescent Nebula) RA 20:12.1
||60 minutes (20 X 3 minutes)
||Canon 60Da DSLR
||Prime focus of a SkyWatcher f/7 Esprit
120 with a focal length of 840 mm
||Bedford, Nova Scotia, Bortle 7 to 8 skies (17 to 18 magnitudes per arc-second2)
||This image was processed entirely in Images Plus.
stacking, statistical filter applied to reduce noise before stretching.
stretching and split star processing
used to enhance the image. Masked noise reduction using a frequency
domain lowpass filter applied to the DSO layer and then it was
recombined with the star layer. Image binned 2 by 2. Final sharpening,
a slight start reduction and a saturation boost rounded out the
processing. Since the 60Da has on sensor dark suppression no darks were
used in the calibration.