SN0301 12.5" f/5.6 (1.88" Pyrex)


		OBSIDIAN OPTICS MIRROR TEST SHEET - 12/2/03

           Comments: SN0301 Gruendeman 12.5" f/5.6
   Optical diameter: 12.42
Radius of curvature: 138.75
                f/D:  5.59
   Diffraction disc: 0.000147196

	ZONE                1          2          3          4          5      
	h(x)              2.5000     3.7700     4.7200     5.5400     6.2100
	h(m)              1.2500     3.1350     4.2450     5.1300     5.8750
	hm**2/R           0.0113     0.0708     0.1299     0.1897     0.2488
	hm/4f             0.0045     0.0113     0.0153     0.0185     0.0212
	Diam1             0.0390     0.0930     0.1550     0.2200     0.2730
	Diam2             0.0600     0.1170     0.1790     0.2350     0.2900
	Diam12            0.0495     0.1050     0.1670     0.2275     0.2815
	D12 -  0.0351     0.0144     0.0699     0.1319     0.1924     0.2464
	Lamda c           0.0031    -0.0009     0.0020     0.0027    -0.0024
	Lamda f * 1e5       1.41      -1.07       3.08       5.02      -5.02
	Lamda f / rho      0.096     -0.073      0.209      0.341     -0.341
	u * 1E6            -0.20       0.15      -0.44      -0.72       0.72
	Wavefront          -0.37      -0.00      -0.25      -0.66       0.00
	
Maximum wavefront error = 1 / 32.9 wave at zone 4 (average only, both diameters)

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

Polish, surface smoothness, figure of revolution excellent; diffraction edge fine

Results for individual sets of readings:
	Reading Diam1: 1 / 22.6 lamda, Max Trans Abberation=0.41
	Reading Diam2: 1 / 19.2 lamda, Max Trans Abberation=0.48

 
 

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