Comet C/2022 E3 (ZTF) - 4h integration (Morsing)

Celestial hemisphere: Northern · Constellation: Ursa Minor (UMi) · Contains: HD127242 · HD128164

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Comet C/2022 E3 (ZTF) - 4h integration

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Comet C/2022 E3 (ZTF) - 4h integration

This is my second attempt at this small comet. I got much more integration time this time, however, as it was cloudy the first half of the night (and I did not have time to get up in the middle of the night), I had to use the ASIair plan mode and estimate a best guess at reasonable coordinates to 'catch' the comet as it whizzed by the frames at a rather high rate! I managed to get it, but the framing is not as good as mu last shot.

This image represents almost 4 hours of data on the comet and about half that for the star background.

All frames were star aligned and then these were comet aligned. The comet aligned frames the had the stars extracted with StarXTerminator (this took a very long time - around 13 hours! I am very happy that I just upgraded my PC, the old one would have taken 6-8 times as long!). The starless comet aligned subs were then integrated and postprocessed. Half of the star aligned frames were used to make the star image. This contains large halos and artifacts where the comet passed through (despite large scale rejection). After stretching this, the stars were extracted and combined with the starless comet image in Photoshop.

Hope you enjoy!

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Status	Advanced success
Started	...
Astrometry.net job	7080077
PixInsight job	0ILUNJSE92QV41LOA6O5S5Q68WPQ2R45
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h26m19s.42
RA (top/left)	14h16m12s.89
RA (top/right)	14h25m22s.82
RA (bottom/right)	14h36m06s.74
RA (bottom/left)	14h27m21s.70

Dec (center)	+70°34′59″.9
Dec (top/left)	+70°56′23″.3
Dec (top/right)	+69°40′38″.6
Dec (bottom/right)	+70°11′25″.7
Dec (bottom/left)	+71°29′11″.7

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Comet C/2022 E3 (ZTF) - 4h integration

Comet C/2022 E3 (ZTF) - 4h integration

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Comet C/2022 E3 (ZTF) - 4h integration

Comet C/2022 E3 (ZTF) - 4h integration

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