Call me a cynic, but I'm not sure how much of a revelation that is. I always understood the function of an apo was to bring the three primary colours to focus at more or less the same point (more or less depending on the quality!) Maybe that was my misunderstanding
In a kind-of astro facebook way, his personal journey of revelation is profusely documented on CN. I remember a while back he used to advocate and even defend the use of a large SCT with sound reasoning, and I don't just think it was because he owned one at the time. His talk about contrast transfer with a central obstruction was quite enlightening.
Maybe the pills/wine were particularly good that night when he felt the need to espouse that an apo should be able to focus all the visible light more cleanly than an achro...or have I missed something?
