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Diffraction Limited Resolution

  • 14-11-2007 3:43pm
    #1
    Registered Users, Registered Users 2 Posts: 2,110 ✭✭✭


    Guys how do you work out the DLR?
    I have a primary mirror D of 2.4m and want to know the DLR at 100nm, 500nm and 2200 nm.....

    Is it the angle= 1.22(pi)/D ?


Comments

  • Closed Accounts Posts: 394 ✭✭tak


    Go to the bottom of this page for the formula:
    http://www.pha.jhu.edu/~jlotz/aoptics/node2.html

    Seems to be a case of

    Angular Resolution = 1.22 x wavelength / D

    and Radius of Resolution in Image Plane = 1.22 x wavelength x focal length / D

    Don't forget to put wavelength and focal length into the same units (say metres) during calculation.


  • Registered Users, Registered Users 2 Posts: 5,523 ✭✭✭ApeXaviour


    Also just to note your answer will be in radians.


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