Well, Takahashi has moved beyond the FS series to the TOA series, which
reportedly has perfect color correction just like AP.
<michaelanderson4@xxxxxxxxxxxx> wrote in message
> True, it's pretty astonishing, but if you look through a Tak (FS
> series) and an AP,
> the Tak image of Jupiter (for instance) is yellow, though the AP,
> perfect colour correction.
> It's actually very striking. Same thing when comparing an SCT with
> it's modest residual
> chromatic aberration and an AP, the AP comes closest to a Newtonian
> when it comes
> to colour correction compared to any other lens or lens/mirror scope.