Cygnus Veil - 175 120secs unguided subs taken on the night of the 2nd of July (Stefano Ciapetti)

Cygnus Veil - 175 120secs unguided subs taken on the night of the 2nd of July

175 120 secs unguided subs taken with a Canon 70-200 F4 lens, used at 100 FL F4, an ASI 533, Ioptron SmartEQ and an Optolong L-Extreme filter. Image taken from my home terrace. Honestly I am surprised of the result. Image is almost unprocessed. Just stacked with DSS, gradient removal, stars reduction, color adjustment and crop with Astroart. It deserve at least one more night of exposure! No darks used.

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.

It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of explosion, the supernova would have appeared brighter than Venus in the sky, and visible in daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800 light-years, a recent determination of 2400 light-years is based on direct astrometric measurements. (The distance estimates affect also the estimates of size and age.) - Wikipedia

Original
B
C
Final
D

B

Description: background adjustment with curves

Uploaded: ...

C

Description: Added more exposures - total time reached is 11 hours and 58 minutes. Stacking with DSS, crop and gradient correction with Astroart

Uploaded: ...

D

Description: stacked with drizzle2 to increase resolution. Cropped and gradient correction with Astroart.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	4742257
PixInsight job	J9ZNXGKINAU6CZM9MZ2N6PU2EQA83EJ6
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h51m29s.34
RA (top/left)	21h00m55s.23
RA (top/right)	20h42m37s.51
RA (bottom/right)	20h42m18s.86
RA (bottom/left)	21h00m02s.10

Dec (center)	+30°51′56″.8
Dec (top/left)	+32°18′01″.0
Dec (top/right)	+32°28′15″.10
Dec (bottom/right)	+29°23′13″.3
Dec (bottom/left)	+29°13′38″.1

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