Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7) (dswtan)

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

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Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7)

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Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7)

My first foray into narrowband -- managed to (just!) get the elusive Soap Bubble! You do have to know where to look... Thanks to the better processors on Astrobin for the "visual aids"! :-)

Just darks, no flats. Was meant to be testing/learning, but it came out pretty nice in the end for lower-end equipment (ZWO gen 1 filters, old 1600MM pre-Pro camera, SV80 doublet, CGX mount, balcony on side of house) over two nights. Narrowband processing is quite a challenge and takes time! APP makes it a bit more accessible.

Processing is mostly in APP, with modified HSO1 color combination of 1.4x Ha (R=100), 1x O3 (R=30, B=60), 0.8x S2 (G=20, B=100), selected for personal taste and comparing with the successful results of others.

https://en.wikipedia.org/wiki/Crescent_Nebula

https://en.wikipedia.org/wiki/Soap_Bubble_Nebula

Cloudy Nights

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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	3642027
PixInsight job	20W1CTEVATBUWETWUMMJAVPTVELZYQVZ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h12m42s.66
RA (top/left)	20h15m52s.42
RA (top/right)	20h08m56s.87
RA (bottom/right)	20h09m36s.63
RA (bottom/left)	20h16m24s.54

Dec (center)	+38°15′54″.2
Dec (top/left)	+38°59′41″.3
Dec (top/right)	+38°52′35″.8
Dec (bottom/right)	+37°31′48″.9
Dec (bottom/left)	+37°38′48″.1

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Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7)

Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7)

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Contribution Index (beta):

Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7)

Crescent Nebula (NGC 6888) and Soap Bubble (PN G75.5+1.7)

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