From: toby@ccl.umist.ac.uk   
      
   Oren Tirosh wrote:   
      
   > One color correction that can be applied is to make the colors on the   
   > sundial color target look the same as they did in the lab on Earth   
   > under white light. This makes the colors of objects on Mars look the   
   > way they would if they were illuminated by white light.   
      
   why not take a small lamp and  calibrate at night?   
      
   >   
   > [*] Is it always reddish? Only when there is a dust storm? Is it   
   > possible that the color correction applied to pictures was calculated   
   > during a dust storm and is not necessarily applicable for pictures   
   > taken on fair weather?   
      
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    * Origin: you cannot sedate... all the things you hate (1:229/2)