NGC 7293 - Helix Nebula (BensAstroStuff)

Celestial hemisphere: Southern · Constellation: Aquarius (Aqr) · Contains: HD212980 · HD213056 · HD213069 · Helix Nebula · NGC 7293

NGC 7293 - Helix Nebula

Imaged over two nights. Target is low in the sky from my location (<30°) and in the direction of a city over the horizon, so there is a lot of light pollution and atmosphere to deal with. I would probably had better luck with a narrow-band filter like an L-Extreme. I only stacked half the subframes I acquired. There was just too much atmospheric noise. Adding subs didn't improve the contrast, so I narrowed it down to the sharpest ones to try to improve the details.

First major target with new mount, an Orion Atlas EQ-G with several upgrades. I still have more work to do on it but it's very solid. Shout out to Barry S. who I bought the mount from. It had an issue with the declination worm gear and he made it right without hesitation.

Processing
In Siril:
Registered with Drizzle x2
Polynomial Background Extraction with 1 degree order for each sub-frame before stacking.
RFB Background Extraction after stacking
Autostretch
Exported as Tiff

Created Starless version with Starnet++v2.
Created a 2nd version from original stack with light asinh stretch to preserve star colors.

In Gimp:
Levels edit, Raised black point until background noise was acceptable.
Saturation increase to 1.2.
Layer asinh stretch over starless version.
Cropped to 5200x5200.
Exported final as PNG.

LVAAS Astroimaging
FriendlyCosmos

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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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Status	Advanced success
Started	...
Astrometry.net job	6235157
PixInsight job	6XXUU4K9AWCVXT19RR8YXM7RLUQ65PAA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h29m38s.439
RA (top/left)	22h31m16s.830
RA (top/right)	22h31m11s.350
RA (bottom/right)	22h28m00s.717
RA (bottom/left)	22h28m06s.980

Dec (center)	-20°50′10″.75
Dec (top/left)	-21°11′42″.10
Dec (top/right)	-20°27′13″.61
Dec (bottom/right)	-20°28′32″.80
Dec (bottom/left)	-21°13′02″.63

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NGC 7293 - Helix Nebula

NGC 7293 - Helix Nebula

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Image Index:

Contribution Index (beta):

NGC 7293 - Helix Nebula

NGC 7293 - Helix Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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