Comet Leonard and M3 (Behnam Darvish)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: Solar system body or event

Comet Leonard and M3

What a cold morning it was!

I took a total of 2h40m integration but only used 2 hours of the data as the first 40 mins were not good (bad seeing and LA's light pollution as expected.). Ambient temperature was 28 F-27 F throughout but that really helped a lot in terms of noise level in my subs.

The shown image is a cutout made from a 61*120sec stack. I used DSS to first register/stack stars as I normally do using the middle sub exposure as the reference frame. Then I used the DSS's comet mode and stacked the comet using the same reference frame. In both cases, I used median sigma clipping to get rid of much of the moving object/objects in each case (comet or stars). However, there is still some artifact/residual left behind than you can see in the faint tail of the comet for instance if you look carefully. Finally, I merged both stacks together in GIMP.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Amateur hosting facility
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Other
Unknown

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Status	Basic failed
Started	...
Astrometry.net job	5697146
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Comet Leonard and M3

Comet Leonard and M3

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Comet Leonard and M3

Comet Leonard and M3

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