"Piercing the Sky" — C/2022 E3 (ZTF) (Håkon Hammer)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: Solar system body or event

"Piercing the Sky" — C/2022 E3 (ZTF), Håkon Hammer

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"Piercing the Sky" — C/2022 E3 (ZTF)

Revision title: REDUX

Powered byPixInsight

"Piercing the Sky" — C/2022 E3 (ZTF)

Revision title: REDUX

Here it is, darting through the cosmos. I was lucky enough to get a 2 hour break in the clouds on the morning of January 22. Spun off some L exposures then RGB an hour after.

Processing was a big challenge, especially being shot mono. Thanks to some @Adam Block & @Russell Croman magic, I was able to pull off something I'm pleased with. I tried to summarize the workflow below. See you in 50,000 years!

Animation of the comet's movement: youtube.com/shorts/whgIn-BMb5Q

- Håkon

L: 20*120s
R: 25*60s
G: 25*60s
B: 25*60s

Processing workflow:

*Mono

COMET:

Calibrate and register images (on stars)
CometAlignment on registered images
Batch StarXTerminator on comet aligned images
ImageIntegration starless comet images
*Repeat on all filters if necessary
*CometAlignment again on all comet stacks
Processing as usual

STARS:

*Combine registered RGB images
DBE/ABE, PCC/SPCC
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

Original
B
C
Final
D

B

Description: (Cropped)

Uploaded: ...

C

Description: (Rotated)

Uploaded: ...

D

Title: REDUX

Description: Improved colors and luminosity in background.

Uploaded: ...

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"Piercing the Sky" — C/2022 E3 (ZTF)

Revision title: REDUX

"Piercing the Sky" — C/2022 E3 (ZTF)

Revision title: REDUX

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"Piercing the Sky" — C/2022 E3 (ZTF)

Revision title: REDUX

"Piercing the Sky" — C/2022 E3 (ZTF)

Revision title: REDUX

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