NGC 40 - 2017 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 40

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NGC 40 - 2017

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NGC 40 - 2017

This object is a small, 0.6 minute planetary nebula located 3500 light years away in the constellation of Cepheus. It is Caldwell #2, which indicates that it lies far north at +72 degrees declination. This is one of those objects which in my opinion does not quite resemble its nickname, as it appears a bit differently in an image than it does in the eyepiece. The interesting shape is believed to be due to the complex dynamics of gas being expelled from a fast orbiting central double star. I find the red hydrogen tails, located at each end of the object beyond the loop with one tail much longer than the other, to be fascinating but I haven't been able to find any information explaining the reason for this structure. The central source star is clearly visible.

This was a tough object to process. In the end, the best details were obtained by using a H-S-O narrowband color palette. The object is guarded on either side by two orange hued 9-magnitude stars, one of them a nice double.

The refractors!
Cloudy Nights
Narrowband imaging

All of My PN Images (264)

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Status	Advanced success
Started	...
Astrometry.net job	1843160
PixInsight job	1RGAJY67GO3A0H85LAJRMWTI6UVABUXV
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h13m01s.418
RA (top/left)	00h12m33s.216
RA (top/right)	00h15m37s.227
RA (bottom/right)	00h13m30s.328
RA (bottom/left)	00h10m26s.936

Dec (center)	+72°31′17″.71
Dec (top/left)	+72°18′57″.52
Dec (top/right)	+72°35′48″.60
Dec (bottom/right)	+72°43′37″.59
Dec (bottom/left)	+72°26′39″.50

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NGC 40 - 2017

NGC 40 - 2017

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NGC 40 - 2017

NGC 40 - 2017

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