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Re: [ATM] additional lurie-houghton degrees of freedom
Richard in the UK wrote:
> (Dimensions in millimeters)
> Surf Radius Thickness Glass Diameter Conic
> OBJ Infinity Infinity 0 0
> STO 1738.874 17.78 N-BAK4 95.25 0
> 2 -4729.94 2.54 95.25 0
> 3 -1738.874 10.16 N-BAK4 95.25 0
> 4 4729.94 914.4 95.25 0
> 5 -2032 -1014.116 MIRROR 101.6 0
> IMA Infinity 35.66137 0
I noticed it doesn't agree with my radii values
(R1,3=+/-67.42" and R2,4=-/+175.96"). Other than
going with the e-line (as opposed to d-line used by the calculator),
which accounts for negligible difference, I was taking the
mirror r.o.c. as -2000mm (there's always danger lurking in
switching back and forth from mm to inches). When using
correct radius value (-80", or -2032mm), I get R1,3=+/- 68.46"
and R2,4=-/+186.21", practically identical to those with the calculator.
It's still good for me to have you around...
Vlad
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