How to Calculate Intensity in Airy Disk from a Point Source?

[Drakkith]

I'm trying to figure out the intensity of light in different sections of a 2d airy disk from a point source, but I'm not sure how to calculate it. Does anyone have any good sources?

 

[jtbell]

http://en.wikipedia.org/wiki/Airy_disk#Mathematical_details

You need to be able to calculate values of Bessel functions. I've seen online Bessel function calculators... try a Google search for them.

 

[Drakkith]

http://en.wikipedia.org/wiki/Airy_disk#Mathematical_details

You need to be able to calculate values of Bessel functions. I've seen online Bessel function calculators... try a Google search for them.

Thanks Jtbell. I actually found that about an hour or so after I posted lol.
I'll look up that Bessel Function calculator, thanks for suggesting it.