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M42 (The Orion Nebula) and The Running Man Nebula
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Paul Walker
Registered: November 2009
Location: Middlebury, Vermont
Posts: 105
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M42 (The Orion Nebula) and The Running Man Nebula
2009-11-21
Middlebury, VT
Constellation - Orion
Stack of 6 images
Exp: one each - 240s, 90s, 60s, 30s, 14s, 6s, (1,3,4,6,8,10)
ISO 1600
North up
4.25 inch f/3.9 (422mm fl) reflector
Field of view: approx 1.7 x 2.0 deg.
German Equatorial Mount (Super Polaris model)
Camera - Modified Canon Rebel XT (350D) (8 mega pixel) (modified by Hap Griffin)
Orion Broadband Light Pollution Filter
Baader Coma Corrector (MPCC)
Temperature - 33 degree F
Transparency 20.5 mag/arc sec (Sky Quality Meter)
Seeing X (1-10)
Stacking - Registax 5
Noise Reduction - Noise Ninja 2
Other - Picture Window Pro 5
Stack 6 images in Registax, one each of the following exposure times- 240s, 90s, 60s,
30s, 14s, 6s. No Dark frames or Flat Field. Saved stack as separate red, green and blue grayscale images. Histgram stretch on each of these. Combined into color image. Noise reduction. Historgram stretch. Color histogram stretch (has separate control over the red, green and blue portions). Cropped and rotated. Sharpened using unsharp mask function. Noise reduction. Manually removed hot pixels (there were lots of little triple
stars for some reason  )
M42_stkof6_Rh_Gh1_Bh1_NR-hist-chist-crop-rotate-unshp_NR2-(medium).jpg
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| · Views: 73 · Filesize: 656.0kb, 99.9kb · Dimensions: 1069 x 1255 ·
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Scope used and reducer: 4.25 inch f/3.9 (422mm fl) reflector
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Mount Used: German Equatorial Mount (Super Polaris model)
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Camera Used: Modified Canon Rebel XT (350D)
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ISO/Exposure: 1600 / one each - 240s, 90s, 60s, 30s, 14s, 6s
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Location: Middlebury, Vermont
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Seeing 1-10: ---
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Difficulty of Object
Easy
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Additional Categories: Paul Walker's Astrophotos, Messier Catalog
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