North America and Pelican Nebulae - LRGB - Starless (Roger Nichol)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 56 Cyg · 57 Cyg · 60 Cyg · 62 ksi Cyg · B349 · B352 · B353 · B355 · IC 5068 · IC 5070 · NGC 6989 · NGC 6996 · NGC 6997 · NGC 7000 · North America Nebula · Pelican Nebula · Sh2-117 · The star 56Cyg · The star 57Cyg · The star 60Cyg · The star ξCyg

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North America and Pelican Nebulae - LRGB - Starless

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North America and Pelican Nebulae - LRGB - Starless

A 2 x 2 mosaic of the North America and Pelican Nebulae taken over many nights in May. OSC camera with L-eXtreme dual band filter. Total of 94 x 20-minute exposures.

Initially this was a nightmare to process as there were bad gradients in each of the panels, caused by moonlight and the lack of complete darkness in late May. Changing my process flow to use the Normalised Scale Gradient process made a huge difference and allowed the panels to be merged with minimal obvious joins. To bring out detail I ran deconvolution on the synthetic luminance from each panel and merged those into a mosaic too, and applied LRGB.

I haven't processed the stars yet (I have another set of stacks using the L-Pro and short exposures to keep the stars from saturating) but will add them soon.

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Description: Added the stars back in from a stack of 30 x 60s exposures using the L-Pro filter

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Status	Advanced success
Started	...
Astrometry.net job	4823426
PixInsight job	20MBQEZBNZW3C91S0PSVIMKVZ5TVDQDC
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h55m53s.93
RA (top/left)	20h57m37s.95
RA (top/right)	20h41m38s.84
RA (bottom/right)	20h54m19s.12
RA (bottom/left)	21h10m31s.34

Dec (center)	+44°02′13″.4
Dec (top/left)	+46°43′39″.6
Dec (top/right)	+43°12′40″.6
Dec (bottom/right)	+41°20′38″.7
Dec (bottom/left)	+44°44′57″.6

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North America and Pelican Nebulae - LRGB - Starless

North America and Pelican Nebulae - LRGB - Starless

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North America and Pelican Nebulae - LRGB - Starless

North America and Pelican Nebulae - LRGB - Starless

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