C/2021 A1 Leonard 30/12/2021 (Stefano Zamblera)

Celestial hemisphere: Southern · Constellation: Piscis Austrinus (PsA) · Contains: NGC 7135

C/2021 A1 Leonard 30/12/2021, Stefano Zamblera

Powered byPixInsight

C/2021 A1 Leonard 30/12/2021

Link: https://www.xiulong.it/tianwensheying/2023/10/11/c-2021-a1-leonard-30-12-2021/

Link to TIFF/FITS: https://e.pcloud.link/publink/show?code=XZMgGWZdC2MFo7RV7FbxiNHjeRrj758HRSV

Powered byPixInsight

C/2021 A1 Leonard 30/12/2021

Link: https://www.xiulong.it/tianwensheying/2023/10/11/c-2021-a1-leonard-30-12-2021/

Link to TIFF/FITS: https://e.pcloud.link/publink/show?code=XZMgGWZdC2MFo7RV7FbxiNHjeRrj758HRSV

Comet Leonard C/2021 A1 from iDK Namibia remote telescope, Skygems.

Very hard but completely stocked within this processing; mosaic is obtained by 4 different kind of imaging, at different binning. BIN2 mosaic in LRGB consisted in 3 framing. one for the comet head, another framing for the middle comet tail, third framing for distal part of comet tail.
Bin1 Luminance set finally integrated within mosaic.
Final star & starless integration in Photoshop, with numerous adjustement layers and pixel fixing needed.

Dataset available for free from Skygem network here: https://forum.skygems-observatories.com/d/104-new-year-present-c2021-a1-data-set
Calibration is not quite easy as Skygems archives missing proper dark for right calibrated masterflat creation.

Cloudy Nights
Comets Imaging
Image the Universe
AAA : Astronomes et Astrographes Amateurs
Processed with Photoshop
Imagers of Italy
Fine Art Astrophotography
Deep Sky Mosaics
AstroBin Platform open discussions community forum
Astroberry Users
Incredibles Universe
Marvel Univers
SoCal Astrophotography

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 failed
Started	...
Astrometry.net job	8578315
PixInsight job	655YRQ2ZF84ZNL742Q2M38HRT431304M
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

Image Index:

Contribution Index (beta):

C/2021 A1 Leonard 30/12/2021

C/2021 A1 Leonard 30/12/2021

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

C/2021 A1 Leonard 30/12/2021

C/2021 A1 Leonard 30/12/2021

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

In these public groups

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