From: George Anderson 
To: atm 
Reply-To: George Anderson 


Many thanks to those who responded to my questions about R&V, my
original interpretations were correct. However, my results from using that
are dismal to say the least. Here is what I have from R&V for a
5.5" f/2.2 schmidt camera. The mirror is a 6" f/2, and the
corrector glass is BK7 about 9mm thick.

hn              60.62
D               140
NZ              0.866
r               609.6
n               1.517
hp              0.099442257
Ph              0.19789871
f               306.3183174
a               303.2816826
b               306.3183174
c               606.5784167
x               0.029113314
A               1.57273E-05
B               -2.09189E-09
C               -8.70941E-15

I suspect the error is in one of my calculations and will be obvious to
just about anyone other than myself. I have gone over my calculations and
get the same result each time. But then I have been known to repeat
previous mistakes.

George Anderson
Montreal Canada

Clear skies and good health

--- BBBS/NT v4.00 MP