Comet Neowise from light polluted skies (Victor Van Puyenbroeck)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Solar system body or event

Comet Neowise from light polluted skies

This has been sitting in my staging area for almost a year. The quality is not great, but this comet was absolutely amazing! Original description/blog below:

"It was more difficult to see C/2020 F3 Neowise with the naked eye this week, it's brightness has decreased about a magnitude compared to July 11th. This photograph is noisier than my usual work, but buried below a thick layer of light pollution I could find a long blue ion tail, brown dust tail and green comet core."

Average sky background was estimated at 17.1 mag/arcsec^2 in the direction of the comet. See Rev. B for an example. My old Canon 450D is very noisy compared to my cooled astrocam, you can see all the pattern noise and hot pixels in Rev C. I tried to reduce the noise as much as possible in post-processing, but some banding noise is very persistent.

This is a combination of 4 sets of 40x30sec exposures at ISO-400, 80 minutes total exposure. Taken between 23h50 and 01h57 local time (21h50 - 23h57 UTC) in the night of 17-18 July 2020.

Final
Original
B
C

B

Description: Light pollution in raw comet stack

Uploaded: ...

C

Description: Stack after DBE

Uploaded: ...

PixInsight Addicts
Astrophotographers of Belgium
Imaged with APT
Cloudy Nights
Broadband under Bortle 7/8/9

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Astrometry.net job	3682738
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Comet Neowise from light polluted skies

Comet Neowise from light polluted skies

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Comet Neowise from light polluted skies

Comet Neowise from light polluted skies

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