NGC6888 - The Crescent Nebula in Bi-Color (Cosgrove's Cosmos (Patrick Cosgrove))

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888 · Sh2-105

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NGC6888 - The Crescent Nebula in Bi-Color

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NGC6888 - The Crescent Nebula in Bi-Color

NGC 6888, the Crescent Nebula. Found in the constellation Cygnus the Swan, The Crescent Nebula is an emission nebula located 5000 light years away.

I first shot this object about a year ago so - I was excited with what I got then, and I wanted to see what I could do with a little more experience under my belt.

This is was shot with a mono camera and Ha and OIII narrow band filters and processed as a Bi-Color image. Bi-color images are created by taking the results of two color filters and creating a false color RGB image.

This is only the third image I have made with my mono camera, and the first Bi-Color processing attempt. I am still learning all of this fun stuff so I expect to be able to improve this as I learn more…

Image Details:

Here are the image details:

15 x 300 seconds Ha

13 x 300 seconds OIII

50 x 2 seconds Bias exposures

25x 300 seconds Dark exposures

50 Ha Flats

50 Oiii Flats

Scope: Astrophysics 130mm Starfire F/8.35 APO refractor

Guide Scope: Televue 76mm Doublet

Camera: ZWO ASI1600mm-pro with ZWO Filter wheel with ZWO filter set

Guide Camera: ZWO ASI290Mini

Focus Motor: Pegasus Astro Focus Cube 2

Mount: Ioptron CEM60

Polar Alignment: Ioptron Ipolar ingtrated aliggment cameras

Capture Software: PHD2 Guider, Sequence Generator Pro controller

Image Processing: Deepsky Stacker, Pixinsight, Photoshop

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	3768235
PixInsight job	NO81YHINBDJAIFUQL04E3CYZYJGVJ3YX
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h12m23s.163
RA (top/left)	20h11m01s.167
RA (top/right)	20h10m40s.637
RA (bottom/right)	20h13m44s.164
RA (bottom/left)	20h14m06s.988

Dec (center)	+38°26′09″.86
Dec (top/left)	+38°53′33″.16
Dec (top/right)	+38°01′38″.85
Dec (bottom/right)	+37°58′44″.38
Dec (bottom/left)	+38°50′35″.20

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NGC6888 - The Crescent Nebula in Bi-Color

NGC6888 - The Crescent Nebula in Bi-Color

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NGC6888 - The Crescent Nebula in Bi-Color

NGC6888 - The Crescent Nebula in Bi-Color

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