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Diffraction Limited Resolution

sei046 · 2007-11-14 15:43:55

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 ?

14-11-2007 3:43pm

#1

sei046

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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 ?

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Comments

#2 14-11-2007 4:09pm

tak

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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.

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#3 14-11-2007 4:21pm

ApeXaviour

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Also just to note your answer will be in radians.

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