Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Solar system body or event
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C/2021 S3 PanStarrs (2024-05-07), Adam Block
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Getting plate-solving status, please wait...
C/2021 S3 PanStarrs (2024-05-07), Adam Block
Powered byPixInsight

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Description

This comet, moving slowly in the foreground of bright nebulae, represents one of a variety of situations that makes comet processing so difficult. In this case the standard method of creating a comet-only image will not completely reject nebulosity (as it does stars) because these structures are large and extended. It is also not possible to simply clone them out. In addition, their presence makes comet subtraction fraught with additional difficulties. In a new Comet Academy series of videos released today I wrangle these issues and my PixInsight techniques resulted in the image shown here. There were two or three "tricks" that allowed the eventual completion of this work and I suspect will be useful to others.

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C/2021 S3 PanStarrs (2024-05-07), Adam Block