IC405 - The Flaming Star Nebula

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Image Data: Object Information:
  • Exposure:  (Ha+R & L) (Ha+R)GB
    • L & Ha binned 1x1, RGB binned 2x2
    • Ha 17x900s, L 24x300s, R 7x300s, G 18x130s, B 18x220s
  • Telescope:  Stellarvue SV80S @ f/4.77
  • Mount:  MI-250 GoTo
  • Camera:  SBIG ST-2000XM CCD, SBIG CFW-8
  • Location:  My backyard in Goleta, CA
  • Date/Time: 
    • LRGB: November 17-18, 2004,  21:01-01:49 PST
    • Ha: November 22, 2004, 21:01-01:49 PST
  • Processing:  Taken  in CCDSoft v5 using CCDCommander.  Reduced in CCDSoft.  Aligned with RegiStar.  Combined sub-exposures with Ray Gralak's Sigma Clip.  DDP to with custom software.  Curves, levels, saturation, unsharp mask, selective blur in Photoshop.

  • Notes:  I initially did a straight LRGB, but didn't like the detail visible.  Also had a problem originally that stopped the acquisition of the red frames half way through.  So, I added in the Ha data.  The Ha combine is a bit strange.  I started with the LRGB image I originally processed.  Next I blended the Ha and red data (from the LRGB) 80%/20% to make the a new red channel in Photoshop (per Rob Gendler's procedure),.  Then I took this new Ha+R frame and used it as luminance for only the red channel at 75% blending.  This resulted in great nebular detail without washing out the blue reflection component around AE Aurigae.

  • "Second light" image with my new MI-250 mount.
  • Name:  IC 405, Caldwell C31, The Flaming Star Nebula
  • Type:  Emission & Reflection nebula
  • Constellation:  Auriga
  • Distance: 1600 light years
  • The Flaming Star Nebula is a very large star forming region.  The red nebula is gases being energized by the stars in the region to emit red light.  AE Aurigae (the bright star in the middle) happens to be passing through this region and is adding its own personal touch to the region.  Bright light from the star is reflecting of the gases near by and appears as the blue regions of  the nebula.
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