Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’ (Olly Barrett)

Celestial hemisphere: Northern · Constellation: Boötes (Boo) · Contains: NGC 5748

Powered byPixInsight

Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Comet Leonard…
Decided to keep it simple and used Short Exposure RGB
Processing…
RGB 10x30s 5x60s each filter

Pixinsight…
COMET ONLY…
CometAlignment Tool then…
Used StarXTerminator (brilliant plugin) on each Linear RGB sub-frame to remove Stars this took a long time
ImageIntegration of separate RGB ‘comet-only’ sub-frames
Dynamic Background Extraction
Ez SoftStretch
RGB combined in PixelMath

Topaz AI…
DeNoise Standard Mode level 16 (Low) no Sharpening

Photoshop…
Lots of small ‘tweaks’ in Camera Raw Filter

STARS ONLY…
Standard RGB combination in PixelMath then isolated using StarXTerminator again

Cleaned up in Photoshop then re-combined with Comet…

It’s a long process but enjoyable when you finally get an image of something that happens once in a lifetime.

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	5301789
PixInsight job	OMBC6DYO25VB3GEHF0CNBPZSQYHPM4OT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h41m35s.912
RA (top/left)	14h45m01s.596
RA (top/right)	14h35m25s.223
RA (bottom/right)	14h38m13s.840
RA (bottom/left)	14h47m45s.385

Dec (center)	+21°56′21″.32
Dec (top/left)	+23°09′29″.74
Dec (top/right)	+22°11′43″.28
Dec (bottom/right)	+20°43′00″.17
Dec (bottom/left)	+21°40′06″.99

Image Index:

Contribution Index (beta):

Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’

Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’

Comet C/2021 A1 Leonard … RGB… ‘Once in a Lifetime’

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information