Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Quick easy questionFormula for angular diameter?

  1. Feb 25, 2007 #1
    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?
  2. jcsd
  3. Feb 25, 2007 #2
    Can you draw a picture and do some trig?
  4. Feb 25, 2007 #3


    User Avatar

    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...?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook