Comet C/2021 A Leonard (Inverted) (Bruce Rohrlach)

Contains: Solar system body or event

Comet C/2021 A Leonard (Inverted)

Inverted image of Comet C/2021 A Leonard captured on the 28th December 2021 from Lysterfield, Melbourne, as it passed through the constellation of Microscopium. This was the only night of 6 nights imaging this comet which I hadn't yet processed. Finally have got around to working with this data. The final image was converted into a negative image, a process used to help bring out the fine intricate detail in the dust tail of the comet.

A very faint spiral galaxy (PGC 66767) is present below the cometary tail near the upper right, but not enough exposure to show the spiral arms, so the core of the galaxy appears like a normal star, albeit slightly fuzzy.

The 2 brightest stars directly above the comets head are left - HD 203655 (a 7th magnitude double star which is 18.4x the suns diameter but 22% cooler), and right - HD 203754 (a 6th magnitude main sequence star 1.1x hotter than our sun and around 12 times the suns luminosity).
Stars can be seen shining through from behind the comets coma.

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Status	Basic failed
Started	...
Astrometry.net job	5959201
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Comet C/2021 A Leonard (Inverted)

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