Measurement of Dihedral Angle Errors of a Large-Aperture Space Retroreflector: Separation of the Effect of Sag Due to Gravity

Atsushi MINATO; Nobuo SUGIMOTO; Zvi BLEIER; George C. HUNTER; James PAUL

doi:10.1007/s10043-995-0319-0

Atsushi MINATO, Nobuo SUGIMOTO, Zvi BLEIER, George C. HUNTER, James PAUL

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Keywords: cube-corner retroreflector, optical test, interferometer, space retroreflector, zero gravity

JOURNAL FREE ACCESS

1995 Volume 2 Issue 4 Pages 319-322

DOI https://doi.org/10.1007/s10043-995-0319-0

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Abstract

A 50-cm diameter hollow cube-corner retroreflector for a space application was tested with a 60-cm interferometer. To separate the effect of sag due to gravity, the interferograms were taken at six rotational positions, with the retroreflector mounted horizontally. The zero-gravity dihedral angles and the effect of sag were estimated from the interferograms.

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