Cygnus Dust - NGC 7000, Pelican, Wall (Jon Bridges)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 56 Cyg · 57 Cyg · B349 · B355 · IC 5070 · NGC 6989 · NGC 6997 · NGC 7000 · North America Nebula · Pelican Nebula · Sh2-117 · The star 56Cyg · The star 57Cyg

Cygnus Dust - NGC 7000, Pelican, Wall

This is my first mosaic, a 2x2 primarily centered on the dust between the Cygnus Wall and Pelican nebula. It look me a few tries to get the settings right in AstroPixelProcessor; I've put what I used below.

Thanks for checking out the finished result!

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AstroPixelProcessor

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First stacked each 4 panels separately and for each filter, so 12 separate stacks. Settings left at default except LNC set to 2nd degree with 3 iterations.

Next, stitched the 4 panels together (one set per filter), bringing them in as light frames. Used the following settings:

[Registration]

- Scale Stop = 10 (increase if needed based on overlap)

- Dynamic Distortion Correction = CHECKED

- Same Camera and Optics = UNCHECKED

- Registration Mode = Mosaic

[Normalization]

- Mode = advanced

[Integration]

- LNC = 2nd deg 3 iterations.

- Enable MBB = CHECKED

- MBB slider = % of panel overlap, 18% in this case.

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Pixinsight

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1. Deconvolution on Ha only.

2. TGV Denoise & MMT (Jon Rista method) used for noise reduction.

3. Masked Stretch, then Histogram slightly.

4. Star Reduction on Sulfur II using Adam Block technique with Starnett++.

5. PixelMath SHO combine:

---- Red: 70% SII, 23% Ha, 7% OIII

---- Green: 20% SII, 60% Ha, 20% OIII

---- Blue: 8% SII, 8% Ha, 84% OIII

6. Star Reduction on clone of Ha, used for Lum, then applied to RGB.

7. Color adjustments, SCNR, masks with curves, etc...

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Photoshop

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1. Saturation adjustment, final color tweaking.

2. Spot cleanup of over-saturated stars.

3. Smart Sharpening with edges mask.

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Status	Advanced success
Started	...
PixInsight job	EJLNQ7EBLDTEQVXFNYRJYSZV47OYGQXU
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h55m13s.96
RA (top/left)	21h05m56s.57
RA (top/right)	20h53m09s.60
RA (bottom/right)	20h44m21s.42
RA (bottom/left)	20h57m10s.71

Dec (center)	+44°00′29″.10
Dec (top/left)	+43°31′44″.7
Dec (top/right)	+45°58′01″.5
Dec (bottom/right)	+44°25′26″.7
Dec (bottom/left)	+42°02′53″.5

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Cygnus Dust - NGC 7000, Pelican, Wall

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Cygnus Dust - NGC 7000, Pelican, Wall

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