Demi journée solaire (Mickael Coulon)

Contains: Solar system body or event

Demi journée solaire

1 demi journée solaire :

Soit 13 jours de prise de vue du 19 aout au 1er septembre, par tranches de quelques minutes tous les jours, entre les nuages (ici dans le Nord, on a pas vraiment eu la canicule de fin aout ^^)

Comme tout ce qui se trouve dans l'espace, rien n'est figé, le soleil ne fait pas exception à cette règle en tournant sur lui même en 26 jours (environ, n'étant pas solide, cette rotation n'est pas la même partout !)

On peut voir cette rotation en suivant les taches solaires se mouvant sur le disque solaire, de la gauche vers la droite.

Deux paires de tâches (3411/ 3405 puis 3413/3415) captent le regard sur cette rotation, elles apparaissent et disparaissent au fil des jours.

De la même manière, on voit l'activité solaire varier quotidiennement, les éruptions et protubérances apparaissent et disparaissent de jour en jour, sans jamais cesser, en raison de la période de haute activité actuelle !

Exifs : Lunt 50mm / Monture SolarQuest / Asi178mm

Astrophotographes (France)

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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.

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Astrometry.net job	n/a
PixInsight job	n/a
PixInsight queue size	n/a
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Demi journée solaire

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