Processing M8C images in MaximDL


Jul 11, 2005

 


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#19265 Jul 11, 2005

Because of the grainy nature of the exposures taken with the SXV M8C

in MaximDL, I have found that I get the best results in this program

if I use the following procedures:

1. Open image and calibrate for flats.

2. Convert RGB with Y offset checked.

3. If vignetting still bad I split tricolor and autoflatten each

frame. Then I recombine color.

4. Open "Permanent stretch" and set the Gamma for Max pixels and

adjust for a dark gray background.

5. Save as Fits.

6. Repeat procedures for all exposures for combining.

7. Combine images. I use auto one star and either sum or average.

On the combined image I open Permanent stretch and repeat step 4.

The gray image is important. You cannot see much detail here but

when you do the following the image comes out in a most pleasing way.

8. Save summed image as Fits file and as TIFF or BMP with

autostretch checked.

9. Open image in Photoshop CS and repeatedly adjust the

contrast/brightness until the image is adjusted to your satisfaction.



These steps give the most pleasing background without the grainy

sandy looking background.



I would appreciate any comments or suggestions that would improve

this procedure.



Jim smith



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