NGC 6543 - Cat's Eye Nebula (James E.)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: HD164963 · IC 4677 · NGC 6552

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NGC 6543 - Cat's Eye Nebula

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NGC 6543 - Cat's Eye Nebula

The Cat's Eye Nebula is a planetary nebula in Draco, discovered by William Herschel in 1786, and is about 3200 light years distant. It was the first planetary nebula whose spectrum showed that planetaries were gaseous and not stellar in nature. At the bottom of the image is NGC 6552, a barred spiral at 365 million light years distant.

It has a bright inner core which tends to be blown out during imaging as well as an extended outer halo. It is quite a bit brighter in OIII than in Ha. Many hours were imaged at lengths of 30sec and 60sec to process as an HDR integration but were ultimately not used. Instead, the 180sec OIII and Ha images were barely stretched to linear since all the details of the core were clearly present, followed by an HOO combine in PixelMath, then added near the end of processing to the final processed outer halo. See attachment for a cropped image of the core as well as stretched Ha and OII images.

Imaged on several nights: May 31; Jun 1-2, 5, 10-11, 19; Jul 3, 2023.

Original
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Description: Cat's Eye central core

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Title: OIII_12 hours

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Description: Ha_19 hours

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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	8061821
PixInsight job	U9PNHJPIXISO1ZD6AKL5KYXLIVCXLS1G
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	17h58m57s.452
RA (top/left)	17h57m04s.332
RA (top/right)	17h57m17s.273
RA (bottom/right)	18h00m48s.526
RA (bottom/left)	18h00m39s.335

Dec (center)	+66°37′32″.58
Dec (top/left)	+66°51′05″.57
Dec (top/right)	+66°23′03″.15
Dec (bottom/right)	+66°23′52″.89
Dec (bottom/left)	+66°51′55″.43

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NGC 6543 - Cat's Eye Nebula

NGC 6543 - Cat's Eye Nebula

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NGC 6543 - Cat's Eye Nebula

NGC 6543 - Cat's Eye Nebula

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