1. Feb 25, 2007 #1

   Soylentgreen

   

   i am looking for the equation for angular diameter in relation to an objects distance and diameter.
   i need it expressed in arc seconds, not radians.
   
   anyone know it?

    

   Soylentgreen, Feb 25, 2007
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3. Feb 25, 2007 #2

   cesiumfrog

   

   Can you draw a picture and do some trig?

    

   cesiumfrog, Feb 25, 2007
4. Feb 25, 2007 #3

   russ_watters

   

   Staff: Mentor

   An arcmin is 1/60th of a degree and an arcesc is 1/60th of an arcmin. Can you draw a picture now...?

    

   russ_watters, Feb 25, 2007

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