Transcription of UsingTheRossNullTest - Ceravolo
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UsingTheRossNullTest - Ceravolo
Using The Ross Null Test By Peter Ceravolo 2003 Ceravolo Optical Systems This document may be distributed freely Introduction Measuring zones with the aid of a zonal mask, while requiring little in the way of special equipment, is decidedly not the ideal way to test a parabolic mirror at the center of curvature. Early on in my mirror making days I longed for a more accurate and easily applied testing technique which was also faster to perform. Null tests, where the spherical aberration of the mirror at the center of curvature is canceled out by auxiliary optics, are the ideal.
©2003CeravoloOpticalSystemswww.ceravolo.com 1 UsingTheRossNullTest ByPeterCeravolo ©2003CeravoloOpticalSystems Thisdocumentmaybedistributedfreely
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