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AR: Durable AR coatings on both exterior surfaces over applicable transmission range
Scratch Dig: 60/40 or better (max scratch width 0.006mm, max dig 0.40mm)
Transmitted wavefront @ 633nm: Better than 0.25 wave/inch
Wedge: Better than 30 arcsec
Thickness: 5 +/- 0.05mm, par focal +/- 0.2mm, (filters start par focal +/- 0.1mm per recipe)
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