SN0342 14" f/5 (1.51" Pyrex)
Obsidian Optics Mirror Test - 3/3/04
Comments: SN0342 Carroll 14" f/5
Optical diameter: 13.94
Radius of curvature: 138.6
f/D: 4.97
Diffraction disc: 0.000131004
ZONE 1 2 3 4 5 6
h(x) 2.5600 3.8800 4.8500 5.6600 6.3700 6.9700
h(m) 1.2800 3.2200 4.3650 5.2550 6.0150 6.6700
hm**2/R 0.0118 0.0748 0.1375 0.1992 0.2610 0.3210
hm/4f 0.0046 0.0116 0.0157 0.0190 0.0217 0.0241
Diam1 0.1000 0.1655 0.2265 0.2835 0.3485 0.4050
Diam2 0.0830 0.1545 0.2165 0.2765 0.3420 0.4000
Diam12 0.0915 0.1600 0.2215 0.2800 0.3453 0.4025
D12 - 0.0826 0.0089 0.0774 0.1389 0.1974 0.2627 0.3199
Lambda c -0.0029 0.0026 0.0014 -0.0018 0.0016 -0.0011
Lambda f * 1e5 -1.35 3.01 2.25 -3.49 3.49 -2.62
Lambda f / rho -0.103 0.230 0.172 -0.267 0.267 -0.200
u * 1E6 0.19 -0.43 -0.33 0.50 -0.50 0.38
Wavefront -0.00 -0.45 -0.64 -0.11 -0.34 -0.00
Mirror wavefront error <= 1/16th wave across both diameters
Polish, diffraction edge, figure of revolution, and smoothness all excellent.
Arithmetic wavefront error = 1 / 33.7 wave at zone 3 (average both diameters)
Results for individual diameters:
Reading Diam 1-1: 1 / 16.7 lambda, Max Trans Aberration=0.37
Reading Diam 1-2: 1 / 16.5 lambda, Max Trans Aberration=0.43
Reading Diam 2-1: 1 / 18.5 lambda, Max Trans Aberration=0.40
Reading Diam 2-2: 1 / 18.0 lambda, Max Trans Aberration=0.28
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