Cocoon Nebula and the Comet C/2023 E1 (ATLAS) (LittleGhost)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 71 Cyg · 81 Cyg · Cocoon Nebula · IC 5146 · M 39 · NGC 7082 · NGC 7092 · The star g Cyg · The star π2 Cyg

Cocoon Nebula and the Comet C/2023 E1 (ATLAS)

I started collection of the Hydrogen background back in Spring, then waited for the Cocoon Nebula to rise higher in the night sky before tackling the RGB in summer.

Looking at the subs from the final night of the project I noticed a distinct patch of brightness in the M39 I wasn't previously aware of, and upon closer look it turned out it was green-colored so I realized, to my delight

, that I've discovered a comet

-- not really though, it was C/2023 E1 discovered back in March

. It was quite fortuitous for the comet to actually be near M39 on that night, one of the few clear nights we've had lately.

Of course then I had to learn quickly how to actually process comet material, never having had to do it before, but it's proved quite manageable with the CometIntegration process and star removal done with StarX.

In the end the picture consisted of 4 layers:

- dusty background
- Ha background
- the comet
- the stars

WO Redcat 51 Group
Sharpless2 Objects
Poland

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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
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Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	8294753
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Cocoon Nebula and the Comet C/2023 E1 (ATLAS)

Cocoon Nebula and the Comet C/2023 E1 (ATLAS)

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Image Index:

Contribution Index (beta):

Cocoon Nebula and the Comet C/2023 E1 (ATLAS)

Cocoon Nebula and the Comet C/2023 E1 (ATLAS)

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Acquisition details

Description

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Sky plot

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