Nightscapes & Deep Sky Colors

Astrophotography Brian A. Morganti

NGC 2359

Thor's Helmet

Canis Major



Thor's Helmet is a complex nebula illuminated by a bright rare Wolf-Rayet type star located about 15,000 light years from Earth.  High-velocity stellar winds from this energetic star compress, excite, and illuminate surrounding gas and dust to create a bubble of illumination, similar to the process seen in the Bubble Nebula. 


  • Date & Location:  January 11, 2010  - Bernville, PA

  • Weather:  Calm, 16F.

  • Sky Conditions:  Clear with average transparency. 

  • Optics:  TeleVue NP101is Refractor with 0.8x TeleVue Reducer = 432mm @ f4.3

  • Filter:  Astronomic  EOS clip-in CLS-CCD (Light Pollution Suppression)

  • Mount:  Losmandy G-11 equatorial with Gemini V4

  • Guiding:  Orion Solitaire w/TeleVue TV60is

  • Camera:  Canon T1i (500D) Hap Griffin Modified - Baader UV/IR

  • Exposure:  67 min (5 x 8 min, 3 x 9min) @ ISO 800 RAW

  • Calibration Frames:  No dark frame subtraction (16F)

  • Processing:  Photoshop CS4, Noise Ninja, NIK, Noel Carboni Astronomy Tools

  • Comments:  This  is a target  probably better suited to a larger aperture scope in order to bring out the fine filament detail.  Image is a 100% crop from original capture. 


Astrophotography  -  Nightscapes & Deep Sky Colors