SN0308 14" f/4.8 (1" plate)
OBSIDIAN OPTICS MIRROR TEST SHEET - 1/1/04
Comments: SN0308 14" f/4.8
Optical diameter: 13.92
Radius of curvature: 134.63
f/D: 4.84
Diffraction disc: 0.000127434
ZONE 1 2 3 4 5 6
h(x) 2.5600 3.8800 4.8500 5.6600 6.3700 6.9600
h(m) 1.2800 3.2200 4.3650 5.2550 6.0150 6.6650
hm**2/R 0.0122 0.0770 0.1415 0.2051 0.2687 0.3300
hm/4f 0.0048 0.0120 0.0162 0.0195 0.0223 0.0248
Diam1 0.0680 0.1200 0.1950 0.2570 0.3140 0.3900
Diam2 0.0420 0.0940 0.1580 0.2290 0.2820 0.3590
Diam12 0.0550 0.1070 0.1765 0.2430 0.2980 0.3745
D12 - 0.0373 0.0177 0.0697 0.1392 0.2057 0.2607 0.3372
Lamda c 0.0055 -0.0073 -0.0023 0.0006 -0.0080 0.0072
Lamda f * 1e5 2.63 -8.74 -3.75 1.15 -17.94 17.94
Lamda f / rho 0.207 -0.686 -0.295 0.090 -1.408 1.408
u * 1E6 -0.39 1.30 0.56 -0.17 2.67 -2.67
Wavefront 0.00 1.22 1.27 0.63 2.03 0.00
Maximum wavefront error = 1 / 10.6 wave at zone 5 (averaged both diameters)
Polish, diffraction edge excellent; smoothness, figure of revolution fine
Results for individual sets of readings:
Reading Diam1: 1 / 10.5 lamda, Max Trans Abberation=1.36
Reading Diam2: 1 / 10.8 lamda, Max Trans Abberation=1.45
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