NGC 6888 - a wet sponge (Tom Gray)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · HD192003 · HD192020 · HD192163 · HD192182 · HD192303 · HD192361 · HD192444 · LBN 203 · NGC 6888 · Sh2-105

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NGC 6888 - a wet sponge

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NGC 6888 - a wet sponge

Last night we had a rare clear night, and I decided to run both my rigs. I planned to add some OIII data to my recent crescent nebula using my DSI3 pro mono CCD, but I seem to have totally messed up my darks, which I will have to rectify. This RGB image is taken with my OSC camera using my SCT at f3.3 (660mm focal length) - unfortunately the backspacing is all wrong and the stars wonky, so I've cropped the image.

I used ASTAP to calibrate and stack the best 60% frames, processed in SIRIL with background extraction, green noise reduction and photometric colour calibration. Starnet to remove the stars, SIRIL to stretch, Astrosharp, then recomposition in SIRIL. It all looks a bit like a wet sponge, but I was pleased to have something to show for all my efforts.

Final
Original
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B

Title: Slightly brighter

Uploaded: ...

Schmidt-Cassegrain Telescope (SCT) Imagers
Altair Astro 183 M/C Hypercams
UK Astro-Imaging

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Status	Advanced success
Started	...
Astrometry.net job	8080317
PixInsight job	B76CS0D1DZGKZVPTJOU4KJSIBMMRF3Z1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h12m20s.44
RA (top/left)	20h14m13s.93
RA (top/right)	20h10m26s.11
RA (bottom/right)	20h10m27s.52
RA (bottom/left)	20h14m14s.20

Dec (center)	+38°18′20″.7
Dec (top/left)	+38°35′19″.3
Dec (top/right)	+38°35′08″.8
Dec (bottom/right)	+38°01′12″.5
Dec (bottom/left)	+38°01′24″.8

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NGC 6888 - a wet sponge

NGC 6888 - a wet sponge

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NGC 6888 - a wet sponge

NGC 6888 - a wet sponge

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