NGC40 (crop from CTA 1 image) (Göran Nilsson)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: Bow-Tie nebula · NGC 40

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NGC40 (crop from CTA 1 image)

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NGC40 (crop from CTA 1 image)

This is a crop from the previous image of the supernova remnant CTA 1 (https://www.astrobin.com/ithlw4/B/) to better show the small planetary nebula NGC40. As I mentioned the distance to CTA 1 is estimated about 4600 lightyears and its age is about 10’000 years. NGC 40 is about 3500 light years away from us and 4,500 years old. So, if the estimates are correct the PN is closer to us and not interacting with the SNR. I am not sure how much of the structures close to the PN is associated with it or just part of the SNR, but it easy too imagine that there are some shell-like structures around NGC40.

This is imaged at a focal length of 400 mm, so obviously not as detailed as some other images of NGC40 here on Astrobin, but it appears to be the deepest by revealing a lot of structures in the surroundings.

"Nordish by nature"
ZWO ASI 2600MC PRO
CMOS Imagers
Hydrogen and Oxygen Narrowband Only!
The OSC Club (One Shot Camera)
Celestron RASA

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Status	Advanced success
Started	...
Astrometry.net job	6728467
PixInsight job	D81X7RACGZCAD1QT4Z6TGGZ82ZHRS0SG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h13m15s.358
RA (top/left)	00h15m22s.148
RA (top/right)	00h17m06s.870
RA (bottom/right)	00h11m04s.741
RA (bottom/left)	00h09m28s.641

Dec (center)	+72°32′53″.72
Dec (top/left)	+72°14′59″.99
Dec (top/right)	+72°43′37″.58
Dec (bottom/right)	+72°50′44″.20
Dec (bottom/left)	+72°21′54″.82

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NGC40 (crop from CTA 1 image)

NGC40 (crop from CTA 1 image)

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NGC40 (crop from CTA 1 image)

NGC40 (crop from CTA 1 image)

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