Gday Ken
Quote:
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on a modified Hyperbolic secondary
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I read a paper once by a mob who got access to a brand new RCX and took it apart to put it on an optical bench.
IIRC, they mentioned the secondary was closer to an ellipsoid??
but that was also with F8 optics.
Not sure if the F10 ACF is similar to the newer F8 ACF, but there was a lot of discussuion back then on what figure it really was.
Have to see if i can dig out my old notes to see who published it.
Andrew