Re: Why is ISS still visible in Earth's shadow?

From: Giuseppe N. Gerbore (giuseppegerbore@virgilio.it)
Date: Mon May 02 2011 - 10:49:45 UTC

  • Next message: Robert Reeves: "Re: Why is ISS still visible in Earth's shadow?"

    Have you thought to "umbra" and "penumbra"?
    
    See for example: http://www.astro.washington.edu/courses/labs/eratosthenes/caveat_umbra.html
    
    Add to this Sun ray diffraction by our athmosphere and ISS disappearence becomes gradual.
    
    
    Giuseppe
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