Quote:
Originally Posted by Robert_T
But have a read on the Stellarvue site about optics and you will read Vic's story how they are experimenting with other glasses and that they feel a number are equivalent to fpl53 (for aperture 130 and less) and they will be gradually moving to fcd100... starting with their svx130t... they have stocks of fpl53 they will use up and use that for larger lenses until Vic is confident it is equivalent. The core of the argument is that the strehl is more important than the glass type.
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I suppose that is the crux of it isn't it. If it demonstrably, provably works, then what is the problem?
My point above was more that scope makers marketing "FPL-53" rather than S-FPL-53 is not really one I would necessarily take to mean they are not using the real thing.