Encircled energy for different aperture shapes (circle, triangle, square)

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  • Thread starter Gifty01
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Encircled energy
Hi all, I have a system whereby, there are different aperture shapes which are: circle, triangle, square e.t.c. this apertures are all 300um in diameter. I will like to know if the encircled energy calculated for the different apertures after diffraction will be different due to different diffraction pattern. Thanks in advance.
 

Answers and Replies

  • #2
anuttarasammyak
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I think not shapes but area of aperture matters for amount of energy going through.
 
  • #3
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I measured the center of gravity (COG) of the different spot position at different distances on the camera sensor after diffraction. but I noticed different behaviour of the COG calculated for the spots. they behaved differently at the edges.
 
  • #5
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IIRC, one of the planet-finder telescopes used different aperture shapes to get variations in diffraction patterns that resolved 'below limit' separations...
 

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