Deep and dusty near the Crescent Nebula (Göran Nilsson)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 34 Cyg) · 34 P Cyg · Crescent Nebula · LBN 193 · LBN 203 · LBN 206 · LBN 208 · LBN 209 · LBN 212 · LBN 215 · LBN 234 · LDN 879 · LDN 882 · LDN 883 · NGC 6888 · PK076+01.1 · PK076+01.2 · Permanent nova (P Cyg · Sh2-105 · The star Revenant of the Swan · VdB130

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Deep and dusty near the Crescent Nebula

Revision title: New palette with Ha and Sii to red and Oiii to blue and green channel

Link to TIFF/FITS: http://ikiobservatory.com/data/NGC6888_2023-12-01/

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Deep and dusty near the Crescent Nebula

Revision title: New palette with Ha and Sii to red and Oiii to blue and green channel

Link to TIFF/FITS: http://ikiobservatory.com/data/NGC6888_2023-12-01/

This is my entry to the Stargazer's Lounge processing competition for December with data kindly provided by Ikarus Observatory (https://stargazerslounge.com/topic/416558-iko-ngc6888-crescent-nebula-sho-data-release-december-2023/). 120 hours of data makes the image extraordinary deep.I started off by combining the filters as a HSO image. Run the new BlurXT2 AI4 on it. After some stretching in PS there was a lot of green areas (so apparently there is a lot of Sii in this area). Since I am no fan of green in astrophotos I stared tweaking the colours using selective color and curves in PS, all on a starless layer (StarXT). Then a bit of NXT and HiPass filtering. There are some interesting filamentous structures, for example up in the top left corner, and some blue structures to the left of the Bubble. Makes me think SNRs. Maybe someone here knows.

In version B I experimented with another palette with Ha and Siii to red channel and Oiii to both blue and green channel, with some colour tweaks after that.

Please zoom in, the data can take that.

Original
Final
B

B

Title: New palette with Ha and Sii to red and Oiii to blue and green channel

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Status	Advanced success
Started	...
Astrometry.net job	8974191
PixInsight job	PHAC2VJS1KADVRAU9YIGTU2TREOEF3LR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h15m50s.60
RA (top/left)	20h22m59s.99
RA (top/right)	20h07m13s.65
RA (bottom/right)	20h08m54s.24
RA (bottom/left)	20h24m15s.51

Dec (center)	+38°37′00″.8
Dec (top/left)	+39°50′03″.5
Dec (top/right)	+39°23′50″.3
Dec (bottom/right)	+37°22′21″.0
Dec (bottom/left)	+37°47′34″.0

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Deep and dusty near the Crescent Nebula

Revision title: New palette with Ha and Sii to red and Oiii to blue and green channel

Deep and dusty near the Crescent Nebula

Revision title: New palette with Ha and Sii to red and Oiii to blue and green channel

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Deep and dusty near the Crescent Nebula

Revision title: New palette with Ha and Sii to red and Oiii to blue and green channel

Deep and dusty near the Crescent Nebula

Revision title: New palette with Ha and Sii to red and Oiii to blue and green channel

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