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In-situ measurement of the deformation of the off-axis parabolic mirror with large aperture

  • Baiying Zou*
  • , Huijie Zhao
  • , Ying Zhang
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

For the radiometric calibration of remote sensors, it is required to in-situ measure the variation of the surface shape of the large aperture off-axis parabolic mirror under simulated space condition. A digital knife-edge test method was proposed to overcome the difficulty of the interferometer for the in-situ measurement of deformation of the off-axis parabolic mirror with larger aperture. Key components of the system were selected and test system was built up. An off-axis parabolic mirror with aperture of 120 mm and focus length of 1000 mm was tested. Results show that our method is feasible. This method offers great potential in various applications pertaining to the need of in-situ measuring wave-front errors on aspheric surface in the special test condition such as space environment where interferometry are difficult to use.

Original languageEnglish
Title of host publication2012 the 8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012 - Proceedings
Pages215-218
Number of pages4
DOIs
StatePublished - 2012
Event8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012 - London, United Kingdom
Duration: 11 Jul 201213 Jul 2012

Publication series

Name2012 the 8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012 - Proceedings

Conference

Conference8th IEEE International Symposium on Instrumentation and Control Technology, ISICT 2012
Country/TerritoryUnited Kingdom
CityLondon
Period11/07/1213/07/12

Keywords

  • digital knife-edge
  • in-situ measurement
  • off-axis parabolic mirror
  • simulated space condition
  • surface shape measurement

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