SN017Q 12.5" f/4.5 (0.78" Quartz)
Obsidian Optics Bench Test
Comments: SN017Q 12.5" f/4.49		Test Date: 7-1-07
Optical diameter: 12.40"		Substrate: Fused Silica
Focal length: 56.06"			Thickness: 0.775" 

Mirror wavefront error < .04 wave PV across both diameters 

Polish, smoothness, diffraction edge, and figure of revolution all excellent
 
 

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