Iris Nebula & LBN 468 (Darius Kopriva)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 4 Cep · HD195937 · HD198385 · HD198737 · HD200775 · Iris Nebula · LBN 468 · LBN 475 · LBN 483 · LBN 487 · LDN 1147 · LDN 1148 · LDN 1152 · LDN 1155 · LDN 1157 · LDN 1158 · LDN 1167 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · NGC 7023 · T Cep · The star 4 Cep

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Iris Nebula & LBN 468

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Iris Nebula & LBN 468

On this image you can see the Iris Nebula and LBN 468.

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to the open cluster within the larger reflection nebula designated LBN 487. The nebula, which shines at magnitude +6.8, is illuminated by a magnitude +7.4 star designated SAO 19158. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alfirk). It lies 1,300 light-years away and is six light-years across

LBN 468 is a dark nebula located in the constellation Cepheus.
A curious object, Gyulbudaghian's Nebula can be seen at the left hand tip of the central dust. This nebula, first discovered in 1977, has been changing in intensity constantly since. It lies at the heart of Herbig Haro 215. Jets of dust can be seen streaming away from the star at right angles but the nebulosity looks very differen

Southern Hemisphere Astro

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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	8913691
PixInsight job	7S77NX8M8U6BXYP0E57W3CBPZFEY7Z9N
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h48m58s.87
RA (top/left)	21h12m33s.90
RA (top/right)	20h27m25s.67
RA (bottom/right)	20h27m34s.30
RA (bottom/left)	21h07m58s.86

Dec (center)	+67°37′33″.9
Dec (top/left)	+68°42′12″.6
Dec (top/right)	+69°02′56″.2
Dec (bottom/right)	+66°20′50″.2
Dec (bottom/left)	+66°02′32″.3

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Iris Nebula & LBN 468

Iris Nebula & LBN 468

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Iris Nebula & LBN 468

Iris Nebula & LBN 468

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