48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021 (Rod Kennedy)

Celestial hemisphere: Southern · Constellation: Piscis Austrinus (PsA) · Contains: Solar system body or event

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48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021

Powered byPixInsight

48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021

More of our visitor, C/2021 A1 (Leonard), this time a long movie from the 28 December 2021. Apologies for showing so much of this object. Only when the outcomes are better, interesting or different will I put it up on Astrobin.

Raw Data (SER Movie)

Raw captured data was 367 exposures of 10 seconds integration/exposure advancing a bit over 10 seconds per capture (due to download overhead). The raw data was in the form of a SER movie (uncompressed 16bit image sequence). The images at 2x2 binning were 4144x2822 pixels and image scale was 2.4 arcsec/pixel.

Processed Data (Animated GIF Movie)

The processed date is 96 frames of 300 seconds integration advancing 30 seconds per frame. The processed data is in the form of an animated GIF movie where the frames are played back at 24 fps, which equates to a speedup of 720x. The frames were cropped and scaled by 50% to 1800x1250 pixels yielding a pixel scale of 4.8 arcsec/pixel. The 100% scaled version looks good but it's too big to put on Astrobin.

The effects of the high cloud can been seen with some fading in the comet tail. You take what you are given— this guy is never coming back.

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
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	Advanced success
Started	...
Astrometry.net job	5464478
PixInsight job	8DHYXUWKKETLGOR7CZORFF2GH1SYQHNW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h29m01s.48
RA (top/left)	21h25m52s.33
RA (top/right)	21h36m06s.57
RA (bottom/right)	21h32m05s.76
RA (bottom/left)	21h21m57s.76

Dec (center)	-34°45′57″.4
Dec (top/left)	-36°04′27″.7
Dec (top/right)	-34°53′36″.1
Dec (bottom/right)	-33°27′11″.8
Dec (bottom/left)	-34°36′47″.1

Image Index:

Contribution Index (beta):

48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021

48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021

Equipment

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Description

Comments

Sky plot

Image Index:

Contribution Index (beta):

48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021

48 min Movie of C/2021 A1 (Leonard) 28 Dec 2021

Equipment

Acquisition details

Description

Comments

Sky plot

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