Sirius B in motion 2012 - 2020 (Giuseppe Donatiello)

Image of the day 12/14/2020

Sirius B in motion 2012 - 2020

Acquisition type: Lucky imaging

Image of the day 12/14/2020

Sirius B in motion 2012 - 2020

Acquisition type: Lucky imaging

This composition represents the continuation of a work begun in 2015, when I performed the first composition in which the separation and displacement of Sirius B was perceived.

Each single source image, all taken with the ED 127mm refractor used at f/45 + ROI, is the result of the manual stack of 15-20 "super-frames" (ie of excellent quality) extracted for inspection and visual evaluation from films composed of 250 (therefore about 7% of the total). The individual subframes were manually aligned on the middle centroid (the large white disk that is seen is not Sirius, but his confusing figure!), And rotated until Sirius B matches the theoretical curve of the orbit, with good agreement. The image is therefore not a stack but a multilevel composition.

Please note that although I have been taking pictures for all years between 2012 and 2020, some of them have been kept out for a cleaner and more readable composition. With 8 subframes you get almost a startrail.

POD

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	Basic failed
Started	...
Astrometry.net job	4064652
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Image of the day 12/14/2020

Sirius B in motion 2012 - 2020

Image of the day 12/14/2020

Sirius B in motion 2012 - 2020

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Image Index:

Contribution Index (beta):

Image of the day 12/14/2020

Sirius B in motion 2012 - 2020

Image of the day 12/14/2020

Sirius B in motion 2012 - 2020

Equipment

Acquisition details

Description

Comments

Histogram

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