Urban M42

After fixing my cold weather pinched optics problem that I had been having with my SkyWatcher Esprit 120, I thought I'd try another urban shot from my driveway. The sky was quite clear, but there was an almost first quarter Moon in the sky and the nebula was in the worst part of the light pollution from my urban location. I think the two hour exposure seems to be about right for this target. Click on the image for a higher resolution version and click again to return to this page. 
Object M42  Object RA50:35:16 Dec -5:23:05
Date 30 January 2020
Conditions Clear good seeing and large amount of light pollution
Exposure 120 minutes (60 X 120 seconds), 6 minutes and 40 seconds (16 X 25 seconds) for the core
ISO 800
Camera Canon 60Da DSLR
Optics SkyWatcher Esprit 120  f/7 APO refractor with  a  focal length of 840 mm
Location Bedford, Nova Scotia
Processing This image was processed entirely in Images Plus. Calibration, stacking, statistical filter applied to reduce noise before stretching. Masked 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 star reduction and a masked red boost rounded out the processing. Since the 60Da has on sensor dark suppression no darks were used in the calibration.