;54-point cell with 4(+1) radii: 3*(1+(1+2)+6+8) with uneven angles

;can support a 38-39in diam 1in thick f/6 pyrex mirror, or

;a 37in diam 1in thick f/6 plate glass mirror, or

;a 35in diam 1in thick f/5 plate glass mirror, or

;a 33in diam 1in thick f/4 plate glass mirror

;

;can sometimes be tricky to optimize.

;best run without refocus option first, then reoptimize with refocus on if desired.

;If you run into trouble, here are some known starting points:

;--

;1in f/6 pyrex no refocus 10% obstr. @30rings

;diameter: 635 r1: 0.156193 r2: 0.374595 r2b: 0.387959 r3: 0.639258 r4: 0.902127 a2b: 21.8281 err: 7.79305e-07

;diameter: 660.4 r1: 0.156618 r2: 0.375169 r2b: 0.388871 r3: 0.641298 r4: 0.902262 a2b: 21.8486 err: 8.84087e-07

;diameter: 685.8 r1: 0.157746 r2: 0.376801 r2b: 0.390957 r3: 0.641376 r4: 0.903553 a2b: 21.9021 err: 1.03854e-06

;diameter: 711.2 r1: 0.158344 r2: 0.377614 r2b: 0.392262 r3: 0.643007 r4: 0.903937 a2b: 21.9264 err: 1.18013e-06

;diameter: 736.6 r1: 0.158822 r2: 0.378258 r2b: 0.393306 r3: 0.644808 r4: 0.904295 a2b: 21.9492 err: 1.33445e-06

;diameter: 762 r1: 0.159946 r2: 0.379754 r2b: 0.39545 r3: 0.645333 r4: 0.90531 a2b: 21.9975 err: 1.56086e-06

;diameter: 787.4 r1: 0.160577 r2: 0.38054 r2b: 0.396852 r3: 0.646932 r4: 0.905772 a2b: 22.0186 err: 1.76736e-06

;diameter: 812.8 r1: 0.161204 r2: 0.381313 r2b: 0.398274 r3: 0.648619 r4: 0.906187 a2b: 22.0375 err: 1.99963e-06

;diameter: 838.2 r1: 0.161718 r2: 0.381946 r2b: 0.399452 r3: 0.65056 r4: 0.906508 a2b: 22.0551 err: 2.25552e-06

;diameter: 863.6 r1: 0.162221 r2: 0.382565 r2b: 0.400626 r3: 0.652604 r4: 0.906777 a2b: 22.071 err: 2.55979e-06

;diameter: 889 r1: 0.162661 r2: 0.383113 r2b: 0.401637 r3: 0.654784 r4: 0.907015 a2b: 22.0868 err: 2.93543e-06

;--

;1in f/6 plate no refocus 10% obs. @30rings

;diameter: 889 r1: 0.162659 r2: 0.383109 r2b: 0.401631 r3: 0.654778 r4: 0.907008 a2b: 22.0867 err: 3.42914e-06

;diameter: 863.6 r1: 0.162115 r2: 0.382439 r2b: 0.400337 r3: 0.652921 r4: 0.906598 a2b: 22.0727 err: 2.99265e-06

;diameter: 838.2 r1: 0.161654 r2: 0.381856 r2b: 0.399281 r3: 0.650768 r4: 0.906383 a2b: 22.0554 err: 2.63081e-06

;diameter: 812.8 r1: 0.161077 r2: 0.381141 r2b: 0.39795 r3: 0.648968 r4: 0.906 a2b: 22.0376 err: 2.3217e-06

;diameter: 787.4 r1: 0.160532 r2: 0.380444 r2b: 0.396699 r3: 0.647181 r4: 0.905612 a2b: 22.0174 err: 2.05615e-06

;diameter: 762 r1: 0.160107 r2: 0.37991 r2b: 0.395809 r3: 0.645212 r4: 0.90529 a2b: 21.9974 err: 1.84351e-06

;diameter: 736.6 r1: 0.15834 r2: 0.377946 r2b: 0.392802 r3: 0.645976 r4: 0.90353 a2b: 21.934 err: 1.55432e-06

;diameter: 711.2 r1: 0.157828 r2: 0.377228 r2b: 0.391612 r3: 0.643851 r4: 0.903471 a2b: 21.9109 err: 1.35895e-06

;diameter: 685.8 r1: 0.157275 r2: 0.376453 r2b: 0.390376 r3: 0.642196 r4: 0.903084 a2b: 21.8865 err: 1.19376e-06

;diameter: 660.4 r1: 0.156826 r2: 0.375826 r2b: 0.389398 r3: 0.640436 r4: 0.902729 a2b: 21.8634 err: 1.0537e-06

;diameter: 635 r1: 0.156347 r2: 0.37516 r2b: 0.388347 r3: 0.638715 r4: 0.902388 a2b: 21.8401 err: 9.29521e-07

;diameter: 889 r1: 0.162659 r2: 0.383109 r2b: 0.401631 r3: 0.654778 r4: 0.907008 a2b: 22.0867 err: 3.42912e-06

;diameter: 914.4 r1: 0.163327 r2: 0.384002 r2b: 0.403297 r3: 0.656817 r4: 0.907188 a2b: 22.1084 err: 3.90493e-06

;diameter: 939.8 r1: 0.164061 r2: 0.384994 r2b: 0.405093 r3: 0.658758 r4: 0.90743 a2b: 22.1337 err: 4.44138e-06

;diameter: 965.2 r1: 0.1647 r2: 0.385868 r2b: 0.40664 r3: 0.661028 r4: 0.907519 a2b: 22.1603 err: 5.10171e-06

;diameter: 990.6 r1: 0.165588 r2: 0.387048 r2b: 0.408705 r3: 0.66279 r4: 0.907872 a2b: 22.1895 err: 5.78462e-06

;diameter: 1016 r1: 0.166177 r2: 0.387841 r2b: 0.410029 r3: 0.665232 r4: 0.907949 a2b: 22.2172 err: 6.73277e-06

var r1  0.163327

var r2  0.384002

var r2b  0.403297

var r3  0.656817

var r4  0.907188

var a2b  22.1084

var m2b  0 - a2b

diameter 914.4

thickness 25.4

density 2.45e-06

modulus 6000

poisson 0.22

f-ratio 6

n-mesh-rings 30

rel-support-radii r1 r2 r3 r4 r2b r2b

num-support 3 3 18 24 3 3

support-angle 0 60 0 0 a2b m2b

basis-ring-size 3

basis-ring-min 0

rel-obs-radius 0.1

optimize r1 0.01

optimize r2 0.01

optimize r2b 0.01

optimize r3 0.01

optimize r4 0.01

optimize a2b 1

part triangle 3 point 0 0 point 4 0 point 5 0

part triangle 3 point 2 0 point 3 0 point 3 23

part triangle 3 point 2 1 point 3 2 point 3 1

part triangle 3 point 1 0 point 2 4 point 2 3

part triangle 3 point 2 2 point 3 3 point 3 4

part triangle 3 point 2 5 point 3 6 point 3 5

part triangle 3 part 0 0 part 1 0 part 2 0

part triangle 3 part 3 0 part 5 0 part 4 0

part bar 3 part 6 0 part 7 0