NGC 2359: Thor's Helmet Nebula (ivnlpz)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: LBN 1040 · LBN 1041 · NGC 2359 · Sh2-298

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NGC 2359: Thor's Helmet Nebula

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NGC 2359: Thor's Helmet Nebula

NGC 2359 is a cloud of interstellar gas that resembles Thor’s Helmet. The emission nebula is approximately 3,670 parsecs away and 30 light-years in size. Although very faint, the colors in the gases really pop when taking long exposures. This beautiful deep-sky object gets its glow from WR7, a massive Wolf-Rayet star that will soon turn into a supernova.

Preprocessing in PI:
- WBPP for calibration and cosmetization
- SubframeSelector to find best image by PSF signal
- StarAlignment
- NormalizedScaleGradient
- ImageIntegration
- IntegerResample to get bin2 images

Processing in PI:
- DynamicCrop
- DBE
- EZ decon on Ha on Oiii
- EZ denoise on Ha, Oiii, and Sii
- LinearFit Ha and Sii using Oiii as reference
- EZ soft stretch
- PixelMath to combine into SHO image

Postprocessing:
- Extract luminance and apply small curve
- LRGBCombination
- TGVDenoise
- ACDNR
- StarXterminator
- MLT to slightly sharpen image
- LocalHistogramEqualization with RangeSelection masks
- final CurvesTransformation
- Add stars back with PixelMath
- DarkStructureEnhance
- EZ star reduction

Narrowband imaging
Schmidt-Cassegrain Telescope (SCT) Imagers
N.I.N.A. Users
ZWO ASI1600MM/QHY163M
Suburban Astrophotography
/r/astrophotography
PixInsight Addicts
Images from the EdgeHD Series
Texas Astronomy
Beginners AP

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	5518042
PixInsight job	EPN55XFXT2H3JYITSWKT7K4CMY5P2Q9X
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h18m35s.742
RA (top/left)	07h17m35s.520
RA (top/right)	07h17m34s.639
RA (bottom/right)	07h19m35s.929
RA (bottom/left)	07h19m36s.709

Dec (center)	-13°13′49″.55
Dec (top/left)	-13°02′35″.88
Dec (top/right)	-13°24′47″.80
Dec (bottom/right)	-13°25′02″.51
Dec (bottom/left)	-13°02′50″.81

Image Index:

Contribution Index (beta):

NGC 2359: Thor's Helmet Nebula

NGC 2359: Thor's Helmet Nebula

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Image Index:

Contribution Index (beta):

NGC 2359: Thor's Helmet Nebula

NGC 2359: Thor's Helmet Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

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In these public groups

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