||M42 Object RA 5:35:16 Dec
||50 minutes (25 X 2 minutes) for the
outer areas and 160 seconds (16 X 10 seconds) for the core
||Canon 60Da DSLR
||Prime focus of a SkyWatcher Esprit 120 f/7 APO
||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 50 minute exposure. Combined with
the shorter exposure using a mask to restore the core detail. Image
binned 2 by 2. Final sharpening
applied. Since the 60Da has on sensor dark suppression no darks were
used in the calibration.