SN0219 12.5" f/5 (1.58" plate)
OBSIDIAN OPTICS MIRROR TEST SHEET - 11/30/03
Comments: SN0219 Kandul 12.5" f/5
Optical diameter: 12.4
Radius of curvature: 123.75
f/D: 4.99
Diffraction disc: 0.000131494
ZONE 1 2 3 4 5
h(x) 2.5000 3.7700 4.7200 5.5400 6.2000
h(m) 1.2500 3.1350 4.2450 5.1300 5.8700
hm**2/R 0.0126 0.0794 0.1456 0.2127 0.2784
hm/4f 0.0051 0.0127 0.0172 0.0207 0.0237
Diam1 0.0460 0.1060 0.1730 0.2450 0.3080
Diam2 0.0700 0.1360 0.2020 0.2720 0.3340
Diam12 0.0580 0.1210 0.1875 0.2585 0.3210
D12 - 0.0440 0.0140 0.0770 0.1435 0.2145 0.2770
Lamda c 0.0013 -0.0025 -0.0022 0.0018 -0.0015
Lamda f * 1e5 0.67 -3.13 -3.71 3.71 -3.53
Lamda f / rho 0.051 -0.238 -0.282 0.282 -0.268
u * 1E6 -0.11 0.51 0.60 -0.60 0.57
Wavefront 0.00 0.41 0.74 0.00 0.15
Maximum wavefront error = 1 / 29.2 wave at zone 3 (averaged)
Mirror wavefront error <= 1/20th wave across both diameters
Polish, diffraction edge, figure of revolution excellent; smoothness very good
Results for individual sets of readings:
Reading Diam1: 1 / 20.4 lamda, Max Trans Abberation=0.35
Reading Diam2: 1 / 41.6 lamda, Max Trans Abberation=0.32
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