IC 2118 Witch Head Nebula (Eric Smith)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri) · Contains: 65 psi Eri · IC 2118 · LBN 959 · NGC 1752 · NGC 1909 · PK205-26.1 · The star ψEri · Witch Head nebula · the Witch Head Nebula

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IC 2118 Witch Head Nebula

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IC 2118 Witch Head Nebula

A project to end the year and bring in the New Year with a favourite target of mine in the constellation of Eridanus. IC 2118 also known as the "Witch Head Nebula" and "Cederblad 41" is a faint reflection nebula illuminated by the nearby supergiant bright star Rigel, out of frame but to the right of this image. Distance from Earth is about 900 light-years.

It was captured partially from my backyard in Gérgal, Almeria, Spain and a nearby mountain top Calar Alto, Almeria, Spain. Not all the data was used due to a rotator failure at Calar Alto, so out of the total of 23 hours of images taken, I used 15 hours.

Next step is to capture some narrow band data to enhance the weak Ha background.

Imaging Dates: 27, 28, 29, 30, 31 Dec 2021 and 1 Jan 2021

Red: 115 x 180s = 5.75 H
Green: 133 x 180s = 5.65 H
Blue: 70 x 180s = 3.5 H
Light: 166 x 180s = 8.3 H (Not used, camera rotator failure)

Total Images Captured: 23.2 HImages used: R, G, B = 14.9 H

Backyard Bortle 4.5, Calar Alto Bortle 3.5

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	Distinct awarded users	Total awarded images
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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
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	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.

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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.
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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	5406918
PixInsight job	BYE30Z7WI0OEPCJMAE129IMKXJUITTN5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h04m36s.16
RA (top/left)	04h59m21s.31
RA (top/right)	05h06m45s.82
RA (bottom/right)	05h09m48s.86
RA (bottom/left)	05h02m27s.43

Dec (center)	-07°09′03″.1
Dec (top/left)	-08°10′30″.5
Dec (top/right)	-08°42′58″.3
Dec (bottom/right)	-06°07′34″.3
Dec (bottom/left)	-05°35′14″.5

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IC 2118 Witch Head Nebula

IC 2118 Witch Head Nebula

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IC 2118 Witch Head Nebula

IC 2118 Witch Head Nebula

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