Celestial hemisphere:  Southern  ·  Constellation: Canis Major (CMa)  ·  Contains:  LBN 1040  ·  LBN 1041  ·  NGC 2359  ·  Sh2-298
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Thors Helmet III, Brian Boyle
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Thors Helmet III

Getting plate-solving status, please wait...
Thors Helmet III, Brian Boyle
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Thors Helmet III

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Description

NGC2359 aka Thor's Helmet is an unusual emission shell nebula expelled by a central Wolf-Rayet star in its pre-supernova phase. 

Having imaged it a couple of times, before I have struggled to a) reveal the surrounding nebulosity beyond the "Helmet" shape and b) get some colour into the image.

After my third session of "backyard" imaging, I have collected almost 15 hours of Ha and [OIII] data. 

 To this I have combined 8hours of Telescope Live HO data.  In the post-processing I tried to preserve the better spatial resolution of the TL data, with the extra depth provided by addition of the data sets [equal weighting turned out to be optimal for the SNR].

I hope you like it.

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