Chaine Markarian wide (LeCarl99)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: IC 3475 · M 84 · M 86 · M 88 · M 91 · NGC 4374 · NGC 4388 · NGC 4402 · NGC 4406 · NGC 4413 · NGC 4425 · NGC 4435 · NGC 4438 · NGC 4459 · NGC 4461 · NGC 4473 · NGC 4477 · NGC 4501 · NGC 4531 · NGC 4548 · The Eyes

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Chaine Markarian wide

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Chaine Markarian wide

Chaine de Markarian, l'image est centré sur la très petite NGC 4477

La chaine est composé de M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 and NGC 4435. Selon Wikipedia et les études, elles se suivent vraiment dans l'espace, contrairement aux superpositions habituelles des galaxies, qui vue de la terre sont alignée, mais pas nécessairement vu d’ailleurs

Avec en prime M88 et M91 (mais on perd M90 M91, dur choix, on prend le haut ou le bas? )

23 images de 320 secondes, 10 bon flats, pas de bias, ni de dark (comme toujours)

Le guidage était ordinaire le premier jour, FWHM de 4 à 5 mais très bon le 2ieme 3.8 à 4.4

Le traitement est pas facile, même avec 23x320 secondes, les galaxies elliptique font des halo arc en ciel que j'ai du neutraliser, les détails sont dur pour la matrice bayer. Je croyais au début que c'était du bruit, mais c'est les détails très fin des étoiles de la galaxies qui tombent dans les couleurs de la matrice bayer. Avec un brin de déconvolution

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Markarian's chain, image centred on NGC4477

The chain is composed of M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 and NGC 4435. Wikipedia and studies show that the galaxies really folow each other in a chain, contrary of the usual alignment per superposition with it's only seen like this from earth

With M88 and M91 on top left (but I have to choose to forget M90, M91)

Light 23x320 seconds, 10 good flats, no darks, no bias (As usual)

Final
Original
B

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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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