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Homework Help: Minimum distance between stars so we see them as two distinct stars

  1. Apr 21, 2010 #1
    1. The problem statement, all variables and given/known data

    Using a telescope with circular aperture of diameter 2.5 meters and wavelength 463 nm. The stars are 10E22 meters away from us. What does the distance between them have to be so we view them as two stars?

    2. Relevant equations

    angle = 1.22 x (wavelength/diameter) > Distance between them = 10E22 x angle

    3. The attempt at a solution

    Plugged in the values given into the equations above and I'm not getting the right answer.
  2. jcsd
  3. Apr 21, 2010 #2
    You should get the right answer. Can you show us the calculation?
  4. Apr 21, 2010 #3

    (1.22 x 463 E-9)/2.5 = 2.259...E-7

    That's my angle q.

    Then I do q x 10E22 > 2.259 E 16 meters
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