NGC 1491 Narrowband Natural (Andrew Barton)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: NGC 1491 · Sh2-206

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NGC 1491 Narrowband Natural

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NGC 1491 Narrowband Natural

NGC 1491 is a faint emission nebula in Perseus with some very bright central details. I captured this nebula in narrow band but chose a different processing path compared to my other narrow band projects. The Ha data was very strong, but there was decent signal in SII and OIII. I really liked the way a natural palette looks for this subject, but also found the Ha data covered the full subject. Give the coverage of the Ha data and its strong signal, I decided to use it for luminance. The result is nice red - blue palette with great detail.

The specific color mix:

R = SII

G = SII * 0.40 + OIII * 0.60

B = OIII

L = Ha

Acquisition Details:

Dates: 12/18/20 - 12/12/20

Gain 200, temp -20C, 2x2 binning

Ha: 86 x 300 sec

SII: 85 x 300 sec

OIII: 85 x 300 sec

Original
Final
B

B

Description: My background was looking lighter online than my local monitor. Applied sRGB color profile and it seems to make a difference.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	4131101
PixInsight job	0J7MG4I5PQO2SQDD010Q1J9UHA0A04G4
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	04h03m26s.87
RA (top/left)	04h04m37s.86
RA (top/right)	04h06m40s.86
RA (bottom/right)	04h02m13s.89
RA (bottom/left)	04h00m16s.30

Dec (center)	+51°16′14″.7
Dec (top/left)	+50°39′11″.9
Dec (top/right)	+51°40′26″.5
Dec (bottom/right)	+51°53′15″.3
Dec (bottom/left)	+50°51′43″.2

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NGC 1491 Narrowband Natural

NGC 1491 Narrowband Natural

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NGC 1491 Narrowband Natural

NGC 1491 Narrowband Natural

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