NGC 2359 – Thor's Helmet (Terry Robison)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: NGC 2359

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NGC 2359 – Thor's Helmet

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NGC 2359 – Thor's Helmet

Thor’s Helmet is a popular target for astrophotographers. We all love to find shapes, and this cosmic cloud certainly ticks many boxes with the wing like appendages on the helmet, to the spooky eyes looking back from some 12000 light years away. The object spans about 30 light years across, and is believed to be in a brief pre-supernova stage of evolution. At its centre, an extremely hot Wolf-Rayet star is located, WR7. This incredible looking stellar object is located in the constellation Canis Major.

I think the object resembles a spooky alien protecting his collection of shiny stellar marbles.

The photo was created by combining both narrowband and RGB data. I wanted to retain the teal colour as so few stellar objects have this.

Exposure Details:

•Lum 65X900

•Red 40X450

•Green 16X450

•Blue 16X450

•Ha 32X1800

•OIII 25X1800

Total time 53.75 hours

Instruments Used:

•10 Inch RCOS fl 9.1

•Astro Physics AP-900 Mount

•SBIG STL 11000m

•FLI Filter Wheel

•Astrodon Lum, Red, Green, Blue Filters

•Baader Planetarium H-alpha 7nm Narrowband-Filter

•Baader Planetarium OIII 8.5nm Narrowband-Filter

Software Used

•CCDStack (calibration, alignment, data rejection, stacking)

•Photoshop CS 6 (Image processing)

Thanks for looking

Astronomical Society of Victoria (ASV)
Objects of the South - negative declination only

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	Distinct awarded users	Total awarded images
Image of the day
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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
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Star trails
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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
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Amateur hosting facility
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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	Basic success
Started	...
Astrometry.net job	2466362
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 2359 – Thor's Helmet

NGC 2359 – Thor's Helmet

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NGC 2359 – Thor's Helmet

NGC 2359 – Thor's Helmet

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