6" f/7.7 (Pyrex)
        		OBSIDIAN OPTICS MIRROR TEST SHEET - 6/21/04

      Comments: Warner 6" refigure 
     Optical diameter: 5.83
Radius of curvature: 89.38
                f/D:  7.67
   Diffraction disc: 0.000202002

ZONE                1          2          3          4      
h(x)              1.2100     1.9900     2.5400     2.9200
h(m)              0.6050     1.6000     2.2650     2.7300
hm**2/R           0.0041     0.0286     0.0574     0.0834
hm/4f             0.0034     0.0090     0.0127     0.0153
Diam1             0.1940     0.2110     0.2390     0.2660
Diam2             0.2340     0.2580     0.2790     0.3140
Diam12            0.2140     0.2345     0.2590     0.2900
D12 -  0.2043     0.0097     0.0302     0.0547     0.0857
Lambda c          0.0056     0.0015    -0.0027     0.0023
Lambda f * 1e5      1.88       1.36      -3.47       3.47
Lambda f / rho     0.093      0.067     -0.172      0.172
u * 1E6            -0.42      -0.30       0.78      -0.78
Wavefront          -0.44      -0.55       0.00      -0.19

Mirror wavefront error rated < 1/20th wave PV across both diameters

Diffraction edge and smoothness excellent; figure of revolution and polish fine.

Arithmetic wavefront error = 1 / 39.2 wave at zone 2 (average both diameters)

Results for individual diameters:
	Reading Diam1: 1 / 36.8 lambda, Max Trans Aberration=0.11
	Reading Diam2: 1 / 28.4 lambda, Max Trans Aberration=0.31

 
 

© 2004 Obsidian Optics