Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Solar system body or event
Comet 12P/Pons–Brooks — 24/03/09, Håkon Hammer
Comet 12P/Pons–Brooks — 24/03/09
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Comet 12P/Pons–Brooks — 24/03/09

Comet 12P/Pons–Brooks — 24/03/09, Håkon Hammer
Comet 12P/Pons–Brooks — 24/03/09
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Comet 12P/Pons–Brooks — 24/03/09

Equipment

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Acquisition details

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Description

Managed to grab a few exposures of the comet before it set behind the treeline at my cabin on march 9th. See ya in 71 years!

L: 30*60s
R: 30*60s
G: 30*60s
B: 30*60s

Processing workflow:

*Mono

COMET:
  1. Calibrate and register images (on stars)
  2. CometAlignment on registered images
  3. Batch StarXTerminator on comet aligned images
  4. ImageIntegration starless comet images
  5. *Repeat on all filters if necessary
  6. *CometAlignment again on all comet stacks
  7. Processing as usual


STARS:
  1. *Combine registered RGB images
  2. DBE/ABE, PCC/SPCC
  3. StarXTerminator and keep only star image


COMBINATION:
Combine fully processed (and stretched) starless comet and star image:
  • Pixinsight: Pixelmath "~((~starless)*(~stars));"
  • Photoshop: Star image on top using "Screen" Blend Mode

Comments

Sky plot

Sky plot

Histogram

Comet 12P/Pons–Brooks — 24/03/09, Håkon Hammer