;21 point cell;  3*(1+2+4) points at r1-r2-r3

;will support a 22inx1in f/6 plate glass mirror w/ no refocus and 10% obs.

;or a 32x2in f/5 pyrex mirror w/ no refocus and 10% obs.

;

;20x1in f/6 plate w/ no refocus and 10% obs. RMS=2.52e-6 (@30rings)

;30x2in f/5 pyrex w/ no refocus and 10% obs. RMS=3.24e-6 (@30rings)

;--

;1in thick f/6 plate w/ no refocus and 10% obstruction (30 rings)

;diameter: 381 r1: 0.257246 r2: 0.531646 r3: 0.854884 r3b: 0.859957 a2: 33.0337 a3: 13.766 a3b: 45.1461 err: 9.2177e-07

;diameter: 406.4 r1: 0.257916 r2: 0.533094 r3: 0.855573 r3b: 0.8604 a2: 33.0505 a3: 13.7684 a3b: 45.1431 err: 1.14261e-06

;diameter: 431.8 r1: 0.258449 r2: 0.534412 r3: 0.856277 r3b: 0.861015 a2: 33.0671 a3: 13.7531 a3b: 45.1503 err: 1.40619e-06

;diameter: 457.2 r1: 0.258988 r2: 0.535749 r3: 0.856931 r3b: 0.861686 a2: 33.0852 a3: 13.7377 a3b: 45.1513 err: 1.71903e-06

;diameter: 482.6 r1: 0.259564 r2: 0.536795 r3: 0.857389 r3b: 0.862859 a2: 33.1302 a3: 13.699 a3b: 45.13 err: 2.08738e-06

;diameter: 508 r1: 0.260218 r2: 0.538299 r3: 0.85733 r3b: 0.864116 a2: 33.2433 a3: 13.6236 a3b: 45.0767 err: 2.51883e-06

;diameter: 533.4 r1: 0.260972 r2: 0.539738 r3: 0.85797 r3b: 0.864731 a2: 33.2696 a3: 13.6048 a3b: 45.0788 err: 3.02489e-06

;diameter: 558.8 r1: 0.261616 r2: 0.541063 r3: 0.858224 r3b: 0.86591 a2: 33.3505 a3: 13.5468 a3b: 45.0449 err: 3.6133e-06

;diameter: 584.2 r1: 0.262323 r2: 0.542609 r3: 0.858891 r3b: 0.866474 a2: 33.375 a3: 13.532 a3b: 45.0462 err: 4.29727e-06

;diameter: 609.6 r1: 0.262971 r2: 0.544143 r3: 0.859111 r3b: 0.867549 a2: 33.4648 a3: 13.4706 a3b: 45.0126 err: 5.08653e-06

;diameter: 635 r1: 0.263346 r2: 0.546326 r3: 0.854524 r3b: 0.872955 a2: 34.4105 a3: 13.0087 a3b: 44.5199 err: 5.92867e-06

var r1  0.261547

var r2  0.541133

var r3  0.857844

var r3b  0.866247

var a2  33.4349

var m2  0 - a2

var a3  13.505

var m3  0 - a3

var a3b  45.0072

var m3b  0 - a3b

diameter 558.8

thickness 25.4

density 2.45e-06

modulus 6000

poisson 0.22

f-ratio 6

n-mesh-rings 30

rel-support-radii r1 r2 r2 r3 r3b r3 r3b

num-support 3 3 3 3 3 3 3

support-angle 0 a2 m2 a3 a3b m3 m3b

basis-ring-size 3

basis-ring-min 0

rel-obs-radius 0.1

optimize r1 0.01

optimize r2 0.01

optimize r3 0.01

optimize r3b 0.01

optimize a2 1

optimize a3 1

optimize a3b 1

part triangle 1 point 0 0 point 0 1 point 0 2

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

part triangle 3 point 2 0 point 5 0 point 6 0

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

part bar 1 part 1 1 part 2 1

part bar 1 part 1 2 part 2 2