Iris Nebula Widefield in LRGB (Jim Lindelien)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 4 Cep · Iris Nebula · LBN 468 · LBN 475 · LBN 483 · LBN 487 · LBN 495 · LDN 1147 · LDN 1148 · LDN 1152 · LDN 1155 · LDN 1157 · LDN 1158 · LDN 1167 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · LDN 1177 · NGC 7023 · Sh2-136 · T Cep · The star 4Cep · VdB139 · VdB141

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Iris Nebula Widefield in LRGB

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Iris Nebula Widefield in LRGB

Iris Nebula Widefield in LRGB

Includes the region of the Ghost Nebula (vdb141) on the left, and LBN468 with its dusty knots and Herbig-Haro objects on the right.

Imaged at 2x2 binning then drizzle integrated at 2x before cropping and post-processing. Later downscaled to FWHM=3 (from 4.5) pixels in final versions.

Sky brightness SQM 20.51 with minor occasional smoke and haze.

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Update: I decided about a week after posting this photo repeat the imaging of this region, instead with my RASA. It produced the better result: https://www.astrobin.com/v30sgb/

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Original
Final
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Description: Removed residual green.

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ASI 6200 MM Pro
WO Star 71
Dark Nebula

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Status	Advanced success
Started	...
Astrometry.net job	3905270
PixInsight job	BLUI3WNJM186Z3HDS91ZYC8QUOBMBB84
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h56m05s.55
RA (top/left)	21h25m12s.59
RA (top/right)	20h23m55s.30
RA (bottom/right)	20h31m13s.50
RA (bottom/left)	21h25m10s.23

Dec (center)	+68°07′05″.7
Dec (top/left)	+69°47′40″.8
Dec (top/right)	+69°07′37″.1
Dec (bottom/right)	+66°10′27″.5
Dec (bottom/left)	+66°45′31″.5

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Iris Nebula Widefield in LRGB

Iris Nebula Widefield in LRGB

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Iris Nebula Widefield in LRGB

Iris Nebula Widefield in LRGB

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