OBSIDIAN OPTICS MIRROR TEST SHEET - 5/15/04

	       Comments: SN0321 16" f/5.6 
   Optical diameter: 15.9    Diameters tested: 4
Radius of curvature: 178.5                f/D:  5.61
   Diffraction disc: 0.000147919

	ZONE                1          2          3          4          5      
	h(x)              3.1700     4.7800     6.0800     7.1300     7.9500
	h(m)              1.5850     3.9750     5.4300     6.6050     7.5400
	hm**2/R           0.0141     0.0885     0.1652     0.2444     0.3185
	hm/4f             0.0044     0.0111     0.0152     0.0185     0.0211
	Diam1-2           0.0852     0.1593     0.2322     0.3143     0.3890
	Diam3-4           0.0573     0.1346     0.2024     0.2866     0.3675
	Diam1-4           0.0712     0.1469     0.2173     0.3004     0.3782
	D1-4 -  0.0566    0.0146     0.0904     0.1607     0.2439     0.3217
	Lambda c          0.0006     0.0018    -0.0044    -0.0005     0.0032
	Lambda f * 1e5      0.25       2.06      -6.75      -0.94       6.75
	Lambda f / rho     0.017      0.139     -0.456     -0.064      0.456
	u * 1E6            -0.03      -0.23       0.76       0.11      -0.76
	Wavefront           0.52      -0.00       0.82       0.77      -0.00

Mirror wavefront error < 1/15th wave PV across 4 diameters

Polish, diffraction edge, figure of revolution excellent; smoothness fine.
	
Arithmetic wavefront error = 1 / 26.4 wave at zone 3 (average 4 diameters)

Results for individual diameters, 4 sets of readings each diameter:
	Readings Diam-1: 1 / 26.3 lambda, Max Trans Aberration=0.27
	Readings Diam-2: 1 / 25.5 lambda, Max Trans Aberration=0.30
	Readings Diam-3: 1 / 15.6 lambda, Max Trans Aberration=0.71
	Readings Diam-4: 1 / 16.5 lambda, Max Trans Aberration=0.70