Hemisphere:  Southern  ·  Constellation: Canis Major (CMa)  ·  Contains:  IC468  ·  NGC 2359  ·  NGC2359  ·  Sh2-298
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NGC2359 Thor's Helmet Nebula, 


            Mark Eby
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NGC2359 Thor's Helmet Nebula

Imaging telescopes or lenses: TS-Optics PHOTOLINE 130 mm f/7 Triplet APO

Imaging cameras: ZWO ASI 1600MM Cooled Pro

Mounts: Celestron CI-700

Guiding cameras: QHYCCD QHY5L II Autoguider

Focal reducers: Astro-Tech ATREDT30

Software: PixInsight 1.8  ·  Stark Labs PHD Giuding  ·  Stark Labs Nebulosity 4

Filters: RADIAN 1.25” TRIAD NARROW BAND  ·  ZWO LRGB 1.25" optimized for ASI1600

Accessory: Orion Thin OAG  ·  ZWO EFW 5x1.25

B: 10x120" (gain: 200.00)
G: 10x120" (gain: 200.00)
R: 10x120" (gain: 200.00)
T: 90x120" (gain: 300.00)

Integration: 4.0 hours

Astrometry.net job: 4224957

RA center: 7h 18' 31"

DEC center: -13° 14' 11"

Pixel scale: 1.513 arcsec/pixel

Orientation: -89.761 degrees

Field radius: 0.631 degrees

Resolution: 2400x1800

Locations: SDAA Dark Sky Observing Site, Tierra del Sol, CA, United States

Data source: Traveller


NGC2359 is an emission nebula located 12,000 light-years from Earth stretching 30 light-years across. It consists of ionized gases excited by central star WR7, an extremely hot star about 300,000 times brighter than our Sun, possibly in a pre-supernova stage. The blue-green color indicates a high concentration of OIII. North is to the left.

Triad filter used for Luminance channel, (T)RGB.