Image Processing: Bad Columns
Copyright 2011 by Dick Locke.  All Rights Reserved.
  Contact and Image Use Information

 Current Astrophotography Capture Equipment
Advanced blending in Photoshop is discussed on my page here.

My Primary workflow page is here.

Bad Column Discussion here:

I'm using Sander Pool's fixfits utility so far, with these commands:

Find, then fix examples:

fixfits -a -fc

fixfits -a -c 654

fixfits -a -c 416, 654, 2635

fixes 654, add others with comma

 


A starting point for the M31 images on this page: Pretty Flat!

1st Cut 20Da image stack.  1200 pixels wide.  Some Photoshop Lab processing to accentuate the color differences by steepening the 'a' and 'b' curves. 
 

Basic Image Processing in Photoshop

 

 

Photography 101 - Dick Locke

 

Excellent Photoshop Astro Techniques LinkMatt's Star Shaping
Selecting StarsMore Photoshop Tricks including shrinking stars

Noise Reduction example: Stacking astropix.


Check out my Veil Image in the LAB color space "a" channel

 Current Astrophotography Capture Equipment
Advanced blending in Photoshop is discussed on my page here. 

Astronomy Pictures: Dick Locke's Astrophoto Gateway page....

Images Home

Copyright by Dick Locke.  All Rights Reserved.  Last update: 11/2008
Contact and Image Use Information

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