NGC 5907 with Esprit 120 & Canon 60Da

This one has had a lot of processing applied to generate the mask used on all stretches. The star streams are extremely faint and after several iterations of blurring and stretching they finally became visible in the mask. For a 2 hour exposure with a 120 mm scope it holds up well compared to an 11 hour exposure taken with a half meter RC scope high in the Sacramento Mountains in New Mexico.

Click on the image to see an earlier attempt (70 minutes from the same location several years ago), click again to return to this image.
Object Object RA 15:15:53 Dec 56:19:43
Exposure 120 minutes (24 X 5 minutes)
Date August 31,2019
ISO 800
Camera Canon 60Da DSLR
Optics SkyWatcher Esprit 120  f/7 APO refractor with  a  focal length of 840 mm

 Nova East Star Party at Smiley's Park, Nova Scotia


This one is heavily processed, while the galaxy is quite easy to bring out the star streams require a lot of work. Split star processing with masked stretches was used to bring out the streams. The initial mask was made from the sum of the red, green and blue channels. The feature mask tool was used to remove most of the stars from the mask. Several iterations of  blurring and stretching were used to make the streams visible in the mask. Finally the mask was used on all stretches of the data and was noise reduced using the frequency filter tool applied with an inverse luminance mask to protect the brighter areas of the image.