NGC 2359, known as Thor's Helmet and also catalogued as Sharpless 2-298, is an emission nebula of the Wolf -Rayet type.
Its central star has been classified as Wolf-Rayet type (a massive star in a pre-supernova stage) and has been catalogued as WR7 (HD 56925). Its distance is uncertain and is estimated to be between 11000 and 22000 light years.
It is not easy to get a good image of this object from Àger as it rises very little above the southern horizon (its declination is -13º13.5').
The image is a Ha-OIII-OIII composition with stars in RGB. It accumulates an exposure of 18 hours.
Click on the image for a 100% version, or go to the Gallery section for complete exposure details.
Updated on 03/01/2023:
I have tested BlurXTerminator with my image of NGC 2359.
I have chosen this one because last year I was very disappointed with the result I got when I processed it. In addition to the problem already mentioned about its very small rise above the horizon, the seeing of the data capture nights was extremely poor.
The result, despite my efforts with the Deconvolution tool, was an image with a very important lack of definition and with very large stars that required a size reduction treatment.
I am very (pleasantly) surprised by the improvement that BlurXTerminator has achieved with this image: not only has it literally "eaten the seeing" but the improvement of the stars is also very noticeable (it has not been necessary to apply any treatment on them).
Click on the image for a 100% version, or go to the Gallery section for complete exposure details.
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