Measuring large mirrors using SCOTS: the Software Configurable Optical Test System

J. H. Burge; P. Su; G. Butel; R. Huang; A. Maldonado; T. Su

doi:10.1117/12.2057726

28 July 2014 Measuring large mirrors using SCOTS: the Software Configurable Optical Test System

J. H. Burge, P. Su, G. Butel, R. Huang, A. Maldonado, T. Su

Proceedings Volume 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation; 91510Z (2014) https://doi.org/10.1117/12.2057726
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Large telescope mirrors are typically measured using interferometry, which can achieve measurement accuracy of a few nanometers. However, applications of interferometry can be limited by small dynamic range, sensitivity to environment, and high cost. We have developed a range of surface measurement solutions using SCOTS, the Software Configurable Optical Test System, which illuminates the surface under test with light modulated from a digital display or moving source. The reflected light is captured and used to determine the surface slope which is integrated to provide the shape. A range of systems is presented that measures nearly all spatial scales and supports all phases of processing for large telescope mirrors.

Citation Download Citation

J. H. Burge, P. Su, G. Butel, R. Huang, A. Maldonado, and T. Su "Measuring large mirrors using SCOTS: the Software Configurable Optical Test System", Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91510Z (28 July 2014); https://doi.org/10.1117/12.2057726

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