Witch Head Nebula (Brian Namovicz)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri) · Contains: 19 Ori) · 19 bet Ori · 20 Ori · 20 tau Ori · 65 Eri) · 65 psi Eri · 69 Eri) · 69 lam Eri · Algebar (β Ori · HD32007 · HD32074 · HD32116 · HD32239 · HD32394 · HD32432 · HD32466 · HD32467 · HD32485 · HD32580 · HD32622 · HD32645 · HD32722 · HD32737 · HD32755 · HD32841 · HD33069 · HD33158 · HD33224 · HD33288 · HD33316 · And 31 more.

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Witch Head Nebula

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Witch Head Nebula

By late February this target is only visible from my backyard for less than 3 hours before it moves behind trees. I started with a decent night capturing luminance data and really liked the angle of the face looking at Rigel. The next couple times when I tried to get RGB data I didn't get the angle correct and had to throw it all out. I was finally able to get a little bit of RGB data and it seems to have been enough to finish the image.

Processing workflow
Pixinsight
   DynamicCrop
   DynamicBackgroundExtraction
   ChannelCombination (RGB)
   Image Solver (RGB)
   SpectrometricColorCalibration (RGB)
   BlurXterminator (correct stars only)
   StarXterminator (save RGB stars, discard L stars)
   NoiseXterminator
   GeneralizedHyperbolicStretch (RGB, L, and RGB stars separately)
   LRGBCombination (combine RGB and L into LRGB starless)
   CurveTransformation (minor adjustments to LRGB starless)
   PixelMath to combine LRGB and RGB stars
Photoshop
   Final crop
   Camera Raw Filter for final touches

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	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
Landscape

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.

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	7239247
PixInsight job	QQI2C5RORMFYE6N6EE6WXAODLQUD63Y9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h08m51s.73
RA (top/left)	05h16m43s.81
RA (top/right)	04h59m03s.42
RA (bottom/right)	05h01m04s.88
RA (bottom/left)	05h18m38s.45

Dec (center)	-07°21′58″.9
Dec (top/left)	-09°10′38″.9
Dec (top/right)	-08°26′26″.4
Dec (bottom/right)	-05°33′03″.9
Dec (bottom/left)	-06°16′43″.3

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Witch Head Nebula

Witch Head Nebula

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Image Index:

Contribution Index (beta):

Witch Head Nebula

Witch Head Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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