[ATM] Maksutof corrector minimum thickness

[Ken Hunter <atm_ken_hunter@yahoo.com>]

Here's an exercise for the MATH whizzes on the atm
list...

If I have a Fused Quartz blank 20 inches diameter and
2.375 thick, can it be generated into a corrector for
a 20 inch Maksutov?

I was thinking that it might not be thick enough
but...

If I were to leave the central portion of the second
surface flat (that portion ahead of the separate RUMAK
secondary) or core out the center, that I could use a
thinner blank than would be required if I were to use
an aluminized spot on the second surface.

So here's the questions...

1. What would the thickness need to be for a 20 inch
diameter corrector for a F4/16 or f4/20 Maksutov if
thickness of the blank were not an issue?

2. What would the thickness need to be to generate the
corrector if I planned to leave the center of the
second surface flat?

3. Is there a Maksutov corrector calculator on the web
somewhere?

Ken Hunter




		
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