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Tutorial:
Flat calibration and how to shot flat images for color cameras


Content:

  1. Flat image for color camera
  2. Pixel gain differences
  3. Hardware setup
  4. Exposure
  5. Master flat 3D analyze
  6. Alternative rgb light source

4: Exposure

What exposure to choose? They shouldn't be to short, Anders at Astronet remind me that to short and it can interfere with monitors refresh rate. To long and the sensor build up dark-current. You can adjust the monitors contrast and brightness, if this isn't enough, ad an extra diffuser (paper).

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