The Veil Nebula, also known as the Cygnus Loop, is a large celestial feature in the Cygnus constellation. It spans over three degrees of the night sky and is the remnant of a massive supernova explosion that happened thousands of years ago. This structure consists of thin, torn remnants of the star's outer layers that were forcefully ejected into space during the explosion. These filaments are illuminated by nearby stars, resulting in a colorful display ranging from deep red to vibrant teal.

The final image and revision B are different images taken a month apart from different locations. I hope you keep reading and find my little tale of two images interesting. 

I imaged this beautiful Nebula from my backyard observatory - Bortle 9 in the middle of Houston in August, and from the nearby Bortle 5 State Park Sep 3. Set B was about 4.5 h of 60 s subs, using the L-Pro filter from my BY observatory. The other set (and final image here) was about 2h of 120s subs using IR/UV filter under B5 sky. Both sets were processed in a similar fashion: Calibrated, integrated, LP removal and color calibration in APP. Star reduction using BlurXterminator in PI, with soft stretching and separate curves processing of the nebula. Small levels adjustment in PS and export to JPG file. Framing is different, and I apologize for that. 

What I find interesting is the amount of noise that the Bortle 9 image shows. I guess no surprise there, but still ... Also interesting that I had to push saturation twice on the B9 image, and still shows less color and contrast. But, it seems to be that the B9 image shows more blue. This may be due to the different filter, maybe? I've been happy with the results I can get from my home observatory. It's a matter of convenience. Yet, this is empirical proof that better skies make for better images No filter can compensate for this. At least when it comes to RGB.

I might merge the two sets of subs and see if the final image is better or worse than the B5 alone. I am speculating that bringing noise from the city subs would make it worse. 

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