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    Calculating the Magnitude of the ISS from photo

    Hi All, I have a photo of the ISS and i wanted to calculate its absolute magnitude. I've found the pixel value for a point on ISS and i have also found the pixel value for an identified star in the background. How would I calculate the ISS absolute magnitude and apparent magnitude from the...
  2. M

    Calculating Satellite Velocity from taken photos

    Hi All, I'm having difficultly with some data i have. I have captured a passing satellite using my nikon DSLR, and using a timed exposure the satellite travelled 430x10-6m (from the pixels) in 5 seconds. The satellite was at a rough height of 800km and at an altitude of 20 degrees. i've...
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