Sh2-108 (Gamma Cygni) - SHO (Joel Shepherd)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 37 gam Cyg · IC 1318 · NGC 6910 · Sadr · Sh2-108 · The star Sadr (γCyg) · gamma Cyg nebula

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Sh2-108 (Gamma Cygni) - SHO

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Sh2-108 (Gamma Cygni) - SHO

Sh2-108 in SHO (Hubble) Palette. I had a heck of time settling on a color mapping for this ... the H-a is overwhelming but doesn't reveal much in the way of interesting structure. The combination I landed on was:

R: 1;.3*S2 + 0.1*Ha

G: 0.7*Ha

B: 1.0*O3 + 0.05*Ha

So, a touch of Ha added to the R and B channels, and toned down Ha for the G channel. Some of the remaining magenta was pushed towards blue or simply desaturated, but I didn't want to eliminate all of it ... it's what the data was saying. Gamma Cygni itself is a tough star to deal with. Anyway, feedback on colors, etc., would be welcomed.

Suburban Astrophotography
N.I.N.A. Users
Narrowband imaging

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Status	Advanced success
Started	...
PixInsight job	4Z2PF1S3CZS026C1ZZHLVAR7VPXBSUJ6
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h22m13s.20
RA (top/left)	20h23m50s.34
RA (top/right)	20h16m31s.20
RA (bottom/right)	20h20m38s.50
RA (bottom/left)	20h27m54s.24

Dec (center)	+40°15′05″.8
Dec (top/left)	+41°17′39″.2
Dec (top/right)	+40°17′08″.3
Dec (bottom/right)	+39°12′25″.7
Dec (bottom/left)	+40°12′01″.4

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Sh2-108 (Gamma Cygni) - SHO

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