Captured in August 2020 but just reprocessed with the H-SOO palette.
It's interesting how Melotte 15 and part of the Fish Head Nebula look enveloped by a white blanket of Oxygen, so white that even the saturation process doesn't give it any particular color.
The Hubble Palette version (
https://astrob.in/6b1een/0/ ) shows this effect but not as strong as in this picture.
The ring artifact on the brightest stars is probably caused by a starnet mask I've used to try protect the stars during stretch. It was a test, maybe I should have blurred/convolute the mask... better next time!
Also the image shows a gradient on the top right, that's my beloved OIII 8mn filter from Baader. I know I can desaturate or find a solution for it but I prefer to keep it as is, to remind me and urge me to change it.
Dates:July 30, 2020 , Aug. 5, 2020 , Aug. 6, 2020
Frames:
Baader Planetarium Ha 1.25": 148x120" (gain: 200.00) -15C bin 1x1
Baader Planetarium OIII 1.25": 170x90" (gain: 200.00) -15C bin 1x1
Baader Planetarium SII 1.25": 130x120" (gain: 200.00) -15C bin 1x1
Integration: 13.5 hours
Darks: ~30
Flats: ~30
Flat darks: ~30
Avg. Moon age: 14.85 days
Avg. Moon phase: 89.86%
Bortle Dark-Sky Scale: 6.00
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