Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  B15  ·  B16  ·  B17  ·  B25  ·  NGC 1605  ·  NGC 1798  ·  PK158+00.1  ·  Sh2-216  ·  Sh2-217  ·  Sh2-219  ·  Sh2-221
SNR Sh2-221, PN Sh2-216 and C/2017 T2 Panstarrs, xordi
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SNR Sh2-221, PN Sh2-216 and C/2017 T2 Panstarrs

SNR Sh2-221, PN Sh2-216 and C/2017 T2 Panstarrs, xordi
Powered byPixInsight

SNR Sh2-221, PN Sh2-216 and C/2017 T2 Panstarrs

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Description

This is a 2 panel mosaic. The 2 main nebulas are the supernova remnant Sh2-221 (G160.4+02.8) and the planetary nebula Sh2-216 (GN 04.41.3), but there are many other objects, dark nebulas, small clusters: NGC1605, NGC1798, Sh2-216, Sh2-221, Sh2-217, Sh2-219, B15, B17, B15.

Additionally the comet C/2017 T2 Panstarrs was crossing this area, which I captured at 2019-12-03 20:50 UTC, just a few frames, and put it on the top.

The objects are mostly quite dim, especially the SNR, so I enhanced the RGB view with many hours of HaO3 layer.

Some more data:

Sh2-221

Distance: 2600 ly

Age: cca. 6600 years

https://ui.adsabs.harvard.edu/abs/2007A%26A...461.1013L/abstract

Sh2-216

Distance: 390 ly

Age: 660.000 years (!!)

https://www.g-vo.org/pmwiki/uploads/About/aa7166-07.pdf

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SNR Sh2-221, PN Sh2-216 and C/2017 T2 Panstarrs, xordi