Observatory.jpg (76333 bytes)


NGC7331

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Acquisition Details:

Telescope:  12.5" Ritchey-Chretien @ F6.75

Camera:  ST10-ME, CFW8

L=6x10min, binned 2x2, Anti-Blooming Filter, Median Combine w/Norm

R=3x10min, binned 2x2, Anti-Blooming Filter, Median Combine w/Norm

G=3x10min, binned 2x2, Anti-Blooming Filter, Median Combine w/Norm

B=3x15min, binned 2x2, Anti-Blooming Filter, Median Combine w/Norm

Final Image Processing: These detailed processing steps were all provided by Al Kelly. 

(except that I increased his suggested 3 LR iterations to 6.  So if it's sharpened too much you can blame me :)

 

Luminance processing
Tangent histogram shaped, Conc. =1.35, Peak skew = 0.12
Fast R-L Deconv, Blur = Gaussian, Rad = 1.5, NR = 1.0, Iter. = 6

Color composite processing
RGB images each received a Gaussian blur with a radius of 2 pixels
R:G:B scaling factors in Process RGB module were 0.95 : 1.00 : 0.80
Default Values and Black Sky functions activated in Join Colors module
Maximum Color Noise Reduction applied in Join Colors module
Color saturation increased to 1.6 in Join Colors


 

 

Hit Counter Visitors since Nov. 19, 2003
Copyright 2002 Gilbert Jones
Last modified: November 13, 2004