SN0305 12.5" f/4.7
	OBSIDIAN OPTICS MIRROR TEST SHEET - 5/30/03

           Comments: SN0305 Miyasato 12.5" f/4.7
   Optical diameter: 12.48
Radius of curvature: 117.63
                f/D:  4.71
   Diffraction disc: 0.00012419

 1 ZONE                1          2          3          4          5      
 2 h(x)              2.5000     3.7700     4.7200     5.5400     6.2400
 3 h(m)              1.2500     3.1350     4.2450     5.1300     5.8900
 4 hm**2/R           0.0133     0.0836     0.1532     0.2237     0.2949
 5 hm/4f             0.0053     0.0133     0.0180     0.0218     0.0250
 6 Diam1             0.0325     0.1000     0.1725     0.2415     0.3135
 7 Diam2             0.0435     0.1170     0.1895     0.2580     0.3275
 8 D12               0.0380     0.1085     0.1810     0.2497     0.3205
 9 D12 -  0.0265     0.0115     0.0820     0.1545     0.2232     0.2940
10 Lamda c          -0.0018    -0.0016     0.0013    -0.0005    -0.0009
11 Lamda f * 1e5      -0.95      -2.08       2.34      -1.06      -2.34
12 Lamda f / rho     -0.077     -0.168      0.189     -0.085     -0.189
13 u * 1E6             0.16       0.35      -0.40       0.18       0.40
14 Wavefront           0.28       0.57       0.02       0.00       0.11
	
Maximum wavefront error = 1 / 38.2 wave at zone 2 *

Results for individual sets of readings:
	Reading set 1: 1 / 47.4 lamda, Max Trans Abberation=0.18
	Reading set 2: 1 / 24.2 lamda, Max Trans Abberation=0.32

* Wavefront analysis exceeds measurement limits, but mirror exceeds 1/20 wave.
      
Polish, diffraction edge, surface smoothness all excellent.
 
 

© 2003 Obsidian Optics