Cocoon Nebula (Wei-Hao Wang)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon Nebula · HD208362 · IC 5146 · LBN 424 · LDN 1055 · Sh2-125 · VdB147

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Cocoon Nebula

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Cocoon Nebula

LHaRGB composition. L data taken under about 1.4" seeing. OIII exposures were also taken, but it turns out the OIII signal from this nebula is too weak to make a big difference. This is my first image processed with PixInsight's new gradient correction tool. It works well, but it requires some parameter tuning.

Rev.B: When I reviewed the first uploaded version, I found an embarrassing mistake: I forgot to turn on a sharpened layer in Photoshop before I flattened the layers. This made the nebular part looks kind of blurry. I corrected this problem and re-upload it. Rev.B is the corrected one.

Original
Final
B

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Status	Advanced success
Started	...
PixInsight job	OQJGJDFTNM0JQFR8LRSGQW2PZECQMU8Y
PixInsight queue size	n/a
PixInsight stage	END_TASK

RA (center)	21h53m29s.199
RA (top/left)	21h55m36s.599
RA (top/right)	21h51m21s.860
RA (bottom/right)	21h51m22s.916
RA (bottom/left)	21h55m35s.207

Dec (center)	+47°16′00″.39
Dec (top/left)	+47°31′56″.100
Dec (top/right)	+47°32′01″.17
Dec (bottom/right)	+46°59′54″.60
Dec (bottom/left)	+46°59′50″.87

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