Re: satellite size ,DSLR imaging question etc

From: Bjoern Gimle@GlocalNet (Gimle@GlocalNet)
Date: Sun May 30 2010 - 12:20:34 UTC

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    A 40m (at right angles to line-of-sight) object at 400 km occupies 40/400000 = 1/10000 
    That fraction is also valid for prime focus, ie 0.2 mm for a 2m FL.
    Divide by pixel size/spacing to get no. of pixels width.
    Matson's SkyMap shows range and phase for the closest track mark when you press 't' in the 
    ----- Original Message ----- 
    From: "ykchia" <>
    >  Would like to know what will be the image size / resolution of a prime
    > focus eg. C8 with a DSLR on target like ISS, HST, Spaceshuttle?  Is
    > prime focus set up adequate to resolve the structure with out using EP
    > projection?  What will be the optimum combinations?   Also formulae for
    > these calcuation will be useful .
    >   Appreciate also a link to a utility that compute phase angle and  range.
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