Celestial hemisphere:  Northern  ·  Constellation: Ursa Minor (UMi)  ·  Contains:  Solar system body or event
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Comet C/2022 E3 (ZTF) from West Oxfordshire UK, AstroBillUK
Comet C/2022 E3 (ZTF) from West Oxfordshire UK
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Comet C/2022 E3 (ZTF) from West Oxfordshire UK

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Comet C/2022 E3 (ZTF) from West Oxfordshire UK, AstroBillUK
Comet C/2022 E3 (ZTF) from West Oxfordshire UK
Powered byPixInsight

Comet C/2022 E3 (ZTF) from West Oxfordshire UK

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Description

This was shot from West Oxfordshire in England pn the evening of Jan 25th 2023. I'd tried various ways of stacking this. It was done twice in Astro Pixel Processor - once registered on the star layer and then again registered on the comet. 

This version used comet registration in APP to create simple unclipped averages in sub-stacks of every 10th frame after removing the aircraft. So stack 1 is frames 1, 11, 21, 31,.. Stack 2 is frames 2, 12, 22, 32.. etc. With the stars then well separated within each trail, StarXTerminator does a good job. I then average the sub-stacks to make a comet layer and merge with a star-registered layer from which the comet has also been removed with SXT. I am grateful to Ray Bellis for suggesting this approach, which gave cleaner data than rejection at the stacking stage.

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Comet C/2022 E3 (ZTF) from West Oxfordshire UK, AstroBillUK