Scanning pentaprism measurements of off-axis aspherics II

Peng Su, James H. Burge, Brian Cuerden, Richard Allen, Hubert M. Martin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

The scanning pentaprism test has provided an important absolute test method for flat mirrors, parabolic mirrors and also collimation systems. We have developed a scanning pentaprism system to measure off-axis paraboloidal mirrors such as those for the Giant Magellan Telescope (GMT) primary mirror. Special characteristics of the pentaprism testing of an off-axis mirror are discussed in the paper. We provide performance results for the final measurement of a 1.7 m off-axis parabolic mirror and present a technique used to determine the radius of the parent, off-axis distance and the clocking of the mirror from the data from the scanning pentaprism system.

Original languageEnglish (US)
Title of host publicationOptical Manufacturing and Testing VIII
DOIs
StatePublished - Oct 19 2009
EventOptical Manufacturing and Testing VIII - San Diego, CA, United States
Duration: Aug 4 2009Aug 5 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7426
ISSN (Print)0277-786X

Other

OtherOptical Manufacturing and Testing VIII
CountryUnited States
CitySan Diego, CA
Period8/4/098/5/09

Keywords

  • Aspherics
  • Optical testing
  • Telescope

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Su, P., Burge, J. H., Cuerden, B., Allen, R., & Martin, H. M. (2009). Scanning pentaprism measurements of off-axis aspherics II. In Optical Manufacturing and Testing VIII [74260Y] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7426). https://doi.org/10.1117/12.828497