Iris nebula (Bernard DELATTRE)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: Iris Nebula · NGC 7023 · VdB139

Iris nebula

ngc7023 L=synthetique couleur=RGB

Cet objet est une belle nébuleuse à réflexion bleue située à 1400 années-lumière de la constellation de Céphée. Une étoile brillante de 7e magnitude (HD 200775) illumine le noyau de la nébuleuse. Cette image en couleurs vraies montre que la couleur dominante de la nébuleuse à réflexion la plus brillante est le bleu, comme c'est le cas pour la plupart des nébuleuses à réflexion, caractéristique des grains de poussière réfléchissant la lumière des étoiles. Les zones les plus sombres de cette image sont des endroits où la poussière bloque la lumière des étoiles derrière elle. Les jolis pétales bleus de la nébuleuse de l'Iris s'étendent sur environ six années-lumière.

Extrait texte Gary IMM

Original
Final
D
E

Fast Newtonians
ZWO ASI1600MM/QHY163M
N.I.N.A. Users
Low-Cost Astrophotography
Short exposures DSO

0a.Most Recent
2a. Images L_RVB
Ctlg NGC
Nébuleuses diffuses par émission & réflexion

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	Distinct awarded users	Total awarded images
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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.

Status	Advanced success
Started	...
Astrometry.net job	3861729
PixInsight job	AREHH4LVBBLTKG2DVHMOSPAGILXH9TUP
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h01m32s.20
RA (top/left)	20h54m07s.96
RA (top/right)	21h07m53s.50
RA (bottom/right)	21h09m11s.84
RA (bottom/left)	20h54m50s.57

Dec (center)	+68°10′19″.2
Dec (top/left)	+67°44′10″.1
Dec (top/right)	+67°36′49″.1
Dec (bottom/right)	+68°35′27″.4
Dec (bottom/left)	+68°43′08″.9

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Iris nebula

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