Crescent Nebula NGC6888 (Ulli_K)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888

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Crescent Nebula NGC6888

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Crescent Nebula NGC6888

Last evening it was clear and I used the chance before the rain during this weekend to set up my scope for the first time after FIVE months!
The Crescent Nebula was an object I wanted to do since a long time. The night was starting good, but after midnight clouds were coming up and I could only use 28 frames of 480s. Guiding was not perfect with some elonganted stars.
Processing was tricky because of the many stars. I started with my usual workflow of DynamicCrop, DBE, PCC, Decon and TGV. Then I streched the image to use StarNetV2. However, StarNet was causing artefacts around the bright stars. That was getting better by applying StarNet separetly on the RGB channels, followed by some histgram adjustment of the channels. The recombined image was blended in PixelMath with the starmask from the first StarNet attempt on the RGB image.
It's far from being perfect and OIII is nearly missing. Anyway, here's my first Crescent Nebula!
CS, Ulli

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Status	Basic success
Started	...
Astrometry.net job	6364875
PixInsight job	n/a
PixInsight queue size	n/a
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Crescent Nebula NGC6888

Crescent Nebula NGC6888

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Crescent Nebula NGC6888

Crescent Nebula NGC6888

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