Contains: NGC 6995, Veil nebula, Network nebula, NGC 6992, IC 1340
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Eastern Veil Nebula

Technical card

Resolution: 5486x3574

Dates: July 31, 2017Aug. 3, 2017Aug. 6, 2017Aug. 9, 2017Sept. 4, 2017

ZWO H-alpha 7nm: 43x300" (gain: 139.00)
ZWO H-alpha 7nm: 10x300" (gain: 150.00)
ZWO OIII: 54x300" (gain: 150.00)
Orion SkyGlow 2" Astrophotography Filter: 180x60" (gain: 10.00)

Integration: 11.9 hours

Avg. Moon age: 12.41 days

Avg. Moon phase: 86.73% job: 1730774

RA center: 314.002 degrees

DEC center: 31.370 degrees

Pixel scale: 1.302 arcsec/pixel

Orientation: 270.757 degrees

Field radius: 1.184 degrees


I added RGB stars using my one-shot color, but couldn't get this to align using the software I was hoping to use, so I did it manually. You can find an error if you look close. I also didn't get my reducer in 100% straight, so stars are skewed to the one side. It's also a tad noisy and just not that sharp overall. Maybe next year?



Chris Sullivan



Added 44 OIII subs (and subtracted seven ones from the previous session).


Combined with 3 hours of data from the one-shot color camera under a full moon. It didn't work as well as I was hoping, so I probably won't try to do this again.


I think I was able to align it slightly better.


Final tweaks to tone down yellow/reddish background.


Fixed the last few skewed stars to the best of my ability, minor adjustments to selective color and levels.


Pulled back some of the saturation and increased contrast.

Sky plot

Sky plot


Eastern Veil Nebula, Chris Sullivan