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Nebulae  »  John Goode  »  M-27
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M-27

Object name / Catalog Number: M-27
Camera (specific model): DSI-Pro for L, DSI-c for RGB
Number of Exposures & Exposure length: 58x30 sec for L, 30x30 sec for RGB
Scope: Model, Aperture and F ratio: Meade LX200GPS, alt-az mount, 8” + f/3.3 focal reducer
Filters used: Astronomik IR on both cameras

Additional Information
Guide camera/scope: None
Image Capture Software: Envisage
Processing software: Nebulosity preprocess & stack (drizzle 2x).  CCD sharp, PhotoShop CS3
Other: Davis mtns, Oct 2006

Original Photo
 

Photo Comments

ChuckR54 wrote:
Qualified - 4 points

1) Focus/Sharpness - Good
2) Composition - Would prefer to see this more nearly centered
3) Star Quality - Shapes are pretty good, but we have a "hollow" appearance. This could be due to using a little too-aggressive move with the midpoint slider in the early stage of processing - letting the curves tool arch a little more will brighten them up.
4) Processing Skills - Histogram well balanced. The black level is slightly clipped. Leaving a little room to the left of the histogram will give you a more natural looking background, and will reveal more of the faint detail around the edge of the nebula & in the 'wings".
5) Exposure/Depth - Good
6) Technical Bonus -

10:04 PM on January 25, 2008

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