It's a very accurate way of doing it though. You know exactly where the point source is and ... that it is as close to a point as you're going to get. I wonder if this has an application in optics?
Hehe yeah, but probably hideously expensive, and there are cheaper ways to get real point sources.
Quantum dots are a few nanometers in size (so << the wavelength that they emit) and you can get a solution of them from Sigma Aldrich for ~$500. People mix them into their samples and then use that to deconvolve the image/volume that they acquire.
