Re: Pssst...Wanna See Some Ronchi Pics?

I bet the tester has made a big , big mistake in testing the Zeiss APQ,
because the images he posted proove iut. They show color, which are
completly absend in the APQ. Such images can be done ONLY , if
the tester makes the mistake and do not test with the APQ with the in
the lightpath calculated Zeiss M44 stardiagonal prism. Removing
that diagonal prism resulting in chromaticle and spherical aberration
just like the images he show.

I dropped him a email in hope he can read english and reply to inform
him about
his mistake

if he understand, than hopefully he is able to repeaed the test or
write at least a notice about his fault

Markus


"starburst" <nope@xxxxxxxxxx> wrote in message
news:defe7p$1ch$1@xxxxxxxxxxxxxxxxxxxxx

> Ed T wrote:
> > Here's a website with comparative Ronchi test photos for refractors. The
> > main site is here:
> >
> > http://homepage3.nifty.com/cz_telesco/
> >
> > The refractor tests are here:
> >
> > http://homepage3.nifty.com/cz_telesco/refracter_test.htm
> >
> >
>
> Wow - that Zeiss as100 looks like a piece of junque, and the foucault
> pic on the APQ, what's with that diagonal scoring?
>
> And that Pentax 12.5 f/6.4 ed! It looks terrible! I wonder what stars
> look like through it - zonal, poorly corrected, you can see the
> concentric circles from the mechanical grinding. Am I mistaken here?
> That lens looks like...well, crap.
>
> The Intes has a pretty scary figure, too.
>
> Lot of surprises. Who woulda guessed that an AP155 had dog biscuit?
>
> What an interesting site. WHo did the testing?
>
> Thanks for the look - Chris




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