F3 NEOWISE at 2,000mm [26 July , 2020] (Brent Newton)

Contains: Solar system body or event

F3 NEOWISE at 2,000mm [26 July , 2020]

Link: https://www.astronewton.com/comets

F3 NEOWISE at 2,000mm [26 July , 2020]

Link: https://www.astronewton.com/comets

I was curious how Neowise would appear at a longer focal length and here is the result! This was taken unguided by spamming as many shots as I could - unfortunately, the long focal length meant the exposures were short enough to make details in the ion tail tricky to recover and most of the exposures also had some amount of elongation in the stars, making a combined Comet + Star image effectively impossible. I also recall the weather was perfectly comfortable, so much so that a friend and I were sitting outside our local observatory until about 4am shooting and processing (and blasting the DOOM Eternal soundtrack)

Housekeeping:

- BPP for Darks, Bias calibration

- Subframe Weighing

- Manual Dynamic Alignment for every frame

- Comet Align

- Ran ProcessContainer to Stretch, StarNet, Destretch every image, then Integrated

- Crop

- DBE for artifical Flat

- L extracted

Color:

- LFit to G, Channel Combine

- MT with nucleus mask to correct for comet elongation

- Background Neut + more DBE

- SCNR Green with core masked out

- Rista TGVD, MMT

- ASH+HT

- ACDNR

Extracted L:

- Decon on Core/Tail

- Rista TGVD, MMT

- Masked Stretch + HT

- ACDNR

- Unsharp Mask, multiple passes for tail detail

- LRGB Combination

- HT to bring blacks tail in

- DBE, multiple passes

- Copied image, gave STF/HT stretch, partially blended in using Max function

- Range Selection + Convolution to blur background

Comets Imaging
Central USA
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Comets

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Status	Basic failed
Started	...
Astrometry.net job	3908671
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F3 NEOWISE at 2,000mm [26 July , 2020]

F3 NEOWISE at 2,000mm [26 July , 2020]

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F3 NEOWISE at 2,000mm [26 July , 2020]

F3 NEOWISE at 2,000mm [26 July , 2020]

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