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Nebulae  »  John Goode  »  M-42
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M-42

Object name / Catalog Number:  M-42
Camera (specific model): DSI-Pro for L, DSI-c for RGB
Number of Exposures & Exposure length: This is a mosaic of 5 "L' and 8 "RGB" images. Each image in the set was  20x20 sec subs.  Additional single central sets at 1 second for central detail.
Scope: Model, Aperture and F ratio:  Meade LX200GPS, alt-az mount, 8” + f/3.3 focal reducer
Filters used: Astronomik IR on both cameras, Celestron LPR 94126A on DSI-Pro

Additional Information
Guide camera/scope: None
Image Capture Software: Nebulosity
Processing software: Nebulosity preprocess & stack (drizzle 2x).  CCD sharp, PhotoShop CS3
Other: mosaic, 5 "L" images and 8 "RGB" images, January, 2008, Bandera

Original Photo
 

Photo Comments

ChuckR54 wrote:
Qualified - 5 points

1) Focus/Sharpness - Excellent!
2) Composition - Very very nice
3) Star Quality - Good
4) Processing Skills - Good histogram balance. The black point is set a little high...this entire region exhibits nebulosity, so raising the black point to create a "black" background around the edges means you are actually leaving a fair amount of faint detail on the table. The image appears a little over-smoothed to my eye...try creating a dubplicate layer, apply your noise reduction to that, then use the opacity slider to blend it in. You can also use a "hide all" layer mask & paint in the noise reduction layer in just those areas that need it. I think a little added saturation 9Hue & saturation tool) helps this image, but this is of course subjective :-)
5) Exposure/Depth - Very good
6) Technical Bonus - Yes - excellent job of controlling the Trapezium area while still bringing out the fainter detail.

9:50 PM on January 25, 2008

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Statistics

  • Posted By: texas
  • Viewed: 616
  • Comments: 1
  • Ratings: 1 vote(s)
  • Rating:

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  • Date/Time: 01-21-2008 12:31 PM

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