Urban NGC6960

I've been experimenting with using an Optolong L-enHance light pollution filter while imaging in my urban driveway and spent a couple of hours last night collecting some data on NGC6960, the western half of the Veil Nebula. This target is very well suited to the filter and produced great results with just two hours of data. Conditions were cloud free, but poor seeing and below average transparency. The wind was quite high with gusts to 50 km/hour and it is a testament to my Celestron CGX-L mount that no subs were lost due to wind induced vibration. The stretch could be pushed further , but I decided to go for detail instead of the fainted wisps of star stuff. Click on the image to see a higher resolution version, then click again on the image to return to this page.

The second image is the same target with only three subs taken with an almost full Moon high in the sky.
Needless to say, with only 45 minutes of filtered subs, this image is nothing to write home about and much of the detail was lost to noise reduction. That said the image compares well to an unfiltered hour long exposure taken from much darker skies. It is still worth processing these kind of shots as it can be a great learning exercise. More detail on the second image can be found here.

2.5 hours exposure fully processed
45 minutes processed as a quick test
Object NGC 6960  Object  RA 20:45.7 Dec 30:43
Date 9 October, 2020
Exposure 2 hours and 30 minutes (10 X 15 minutes)
Conditions Bortle 8 skies, high light pollution levels with poor transparency and high wind.
ISO 1600
Camera Canon 60Da DSLR
Optics Prime focus of a  SkyWatcher Esprit 120 f/7 APO refractor with a focal length of 840 mm
Filter Optolong L-enHance
Location Bedford, Nova Scotia
Processing This image was captured using Sequence Generator Pro, telescope control provided by Mosaic Engine and processed entirely in Images Plus.  Initially an arcsinh stretch was used to brighten the image enough to see where to crop. The image was cropped then a starless mask made using the feature mask tool. The image was split into star and DSO layers using the feature mask and the DSO layer was noise reduced using a large radius, selective neighbourhood detail preserving filter applied with a mask to limit the amount of blurring applied to the nebula. The stars were then recombined with the noise reduced nebula image and another arcsinh stretch was applied using the starless mask made after the first stretch. A slight star reduction was applied to bring the nebula out more without stretching it to preserve detail. The image was binned by two for web download.