OBSIDIAN OPTICS MIRROR TEST SHEET - 7/22/04

	   
           Comments: SN0401 12.5" f/6.5 (0.68" plate)
   Optical diameter: 12.4"		Radius of curvature: 162.75"
                f/D:  6.56		   Diffraction disc: 0.000172935

 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           0.0096     0.0604     0.1107     0.1617     0.2117
 hm/4f             0.0038     0.0096     0.0130     0.0158     0.0180
 Diam1             0.1355     0.1795     0.2385     0.2775     0.3360
 Diam2             0.0970     0.1395     0.1910     0.2445     0.3055
 Diam12            0.1163     0.1595     0.2147     0.2610     0.3207
 D12 -  0.1045     0.0118     0.0550     0.1103     0.1565     0.2163
 Lambda c          0.0022    -0.0054    -0.0005    -0.0052     0.0045
 Lambda f * 1e5    0.83      -5.18      -0.61      -8.19       8.19
 Lambda f / rho    0.048     -0.300     -0.035     -0.473      0.473
 u * 1E6          -0.10       0.64       0.07       1.01      -1.01
 Wavefront         0.00       0.55       0.36       0.91      -0.00

Mirror wavefront error < 1/14th wave PV across both diameters

Polish, diffraction edge, figure of revolution, and smoothness all excellent.
	
Arithmetic wavefront error = 1 / 23.6 wave at zone 4 (average both diameters)

Results for individual diameters:
	Reading Diam1-1: 1 / 21.7 lambda, Max Trans Aberration=0.49
	Reading Diam1-2: 1 / 23.2 lambda, Max Trans Aberration=0.49
	Reading Diam2-1: 1 / 14.4 lambda, Max Trans Aberration=0.58
	Reading Diam2-2: 1 / 15.5 lambda, Max Trans Aberration=0.61