Celestial hemisphere:  Northern  ·  Constellation: Ophiuchus (Oph)  ·  Contains:  Solar system body or event
C/2017 K2 Panstarrs, colour version, Kathy Walker
C/2017 K2 Panstarrs, colour version
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C/2017 K2 Panstarrs, colour version

C/2017 K2 Panstarrs, colour version, Kathy Walker
C/2017 K2 Panstarrs, colour version
Powered byPixInsight

C/2017 K2 Panstarrs, colour version

Equipment

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Acquisition details

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Description

This is a colour version of the comet, shot through separate RGB filters.  My process was to remove stars from the subs prior to doing the comet stacking, to minimize trailed star artifacts.  It is much easier to smooth out the background that way.  The comet image is then combined with stars extracted from a normal stack.

The rate of movement during the session was about 0.9 arcsec per minute.

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