IC 2118 Witch Head Nebula (Krishna Vinod)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri) · Contains: IC 2118 · Part of the constellation Eridanus (Eri) · The star 66Eri · The star Cursa (βEri) · The star Rigel (βOri) · The star λEri · The star ψEri · Witch Head nebula

IC 2118 Witch Head Nebula, Krishna Vinod

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IC 2118 Witch Head Nebula

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IC 2118 Witch Head Nebula

Processing this was a salvage attempt from a difficult imaging session. Intermittent haze and transparency left me with large halos around bright stars and just a hours worth of usable data for this faint emission nebula.

Although this is more comfortably targeted in Winter, I was looking to image it in time for Halloween and was up till 4 am for it. I will definitely have to revisit this, but it was a great learning experience.

This was my first time using ASIAIR to Polar Align and Autoguide my SkyGuider Pro mount. Surprisingly easy! No issues at all and it was nice to just run it all from my cell phone.

(Edit: The strange elongated small stars seen when you click through or go to higher resolution is side effect of the heave noise reduction passes I ran on the image. Those are really several tiny stars close to each other that have been merged into one as a side effect of the noise reduction).

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Distribution of astrophotographers

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	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
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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.

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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.
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	Basic success
Started	...
Astrometry.net job	3017307
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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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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