Celestial hemisphere:  Northern  ·  Constellation: Lynx (Lyn)  ·  Contains:  Solar system body or event
Comet C/2020 F3 NEOWISE 2020-07-16, Sebastian "BastiH" Hinz
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Comet C/2020 F3 NEOWISE 2020-07-16

Comet C/2020 F3 NEOWISE 2020-07-16, Sebastian "BastiH" Hinz
Powered byPixInsight

Comet C/2020 F3 NEOWISE 2020-07-16

Equipment

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Acquisition details

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Description

C/2020 F3 Neowise, some may have seen it before ;-) When I first attempted post-processing in july, I just wasn't able to find a strategy of dealing with that low SNR. I had thought it was a good idea to take many short exposures instead of fewer and longer ones to avoid the core burning out. But it turned out that my 6 second-exposures of the comet standing 11 degrees above the horizon did not yield much of a SNR to start with, so post-processing was quite difficult. Pixel values of background and comet, especially it's blue gas tail were so close that I was not able to generate a range- or luminance mask. And since I try to avoid painting or stamping my images or masks, I finally addressed comet and background by lots of trial and error-work with PI's Dynamic Background Extraction, Background Neutralization, Color Calibration, Multiscale Linear Transform, Histogram Transformation and Curves Transformation.

Comments

Revisions

  • Comet C/2020 F3 NEOWISE 2020-07-16, Sebastian "BastiH" Hinz
    Original
  • Comet C/2020 F3 NEOWISE 2020-07-16, Sebastian "BastiH" Hinz
    B
  • Final
    Comet C/2020 F3 NEOWISE 2020-07-16, Sebastian "BastiH" Hinz
    D

Sky plot

Sky plot

Histogram

Comet C/2020 F3 NEOWISE 2020-07-16, Sebastian "BastiH" Hinz