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Hmlovina Thorova prilba – NGC 2359

Thorova prilba (NGC 2359) je emisná hmlovina v súhvezdí Veľkého psa. Hmlovina je podobná prilbe severského boha hromu a blesku Thora.
Thorova prilba leží asi 11 960 svetelných rokov od Zeme.
Centrálna hviezdna hmlovina je Wolf-Rayetova hviezda WR7. Táto hviezda je mimoriadne horúca. Thorova prilba je z časti podobná Bublinovej hmlovine (NGC 7635). Má taktiež zložitejší tvar a štruktúru v tvare bubliny so zložitými vláknitými štruktúrami v okolí.

Telescope ASA 10″ F/3.6 10N ASTROGRAPH OTA
Focal length 900 mm
Mount G53f
Imaging camera Atik 460EX mono
Guiding cameras Lodestar X2 -Autoguider
Guiding optics ASA 10″- OAG
Focal reducers ASA 3″ Wynne Corrector 0,85x
Constellations Canis Major
Distance 11 960 light years
RA center 07h 08′ 30″
DEC center -13°13′ 48″
Location taken Slovakia
Date taken 04/2019
Pixel scale 1.04 arcsec/pixel
Filters Astronomik Ha 6nm ,
Astrodon OIII 5nm,
Exposure 31×600 s.  Ha filter
20×600 s.  OIII filter
Total exposure cca.8,5 hours
Processing software PixInsight, CCD Inspector

Objekt Thorova prilba (NGC 2359-BICOLOR) bol zachytený pomocou úzkopásmových filtrov Hydrogen-alfa H-α 6nm (656,3 nm), Oxygen OIII 5nm (500,7 nm). Snímka bola spracovaná a poskladaná z viacerých expozícií  600 až1200 sekúnd. Odhaľujú jasné emisné plyny vo viditeľnom svetle.

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