Laser interferometric high-precision geometry (angle and length) monitor for JASMINE

Details Laser interferometric high-precision geometry (angle and length) monitor for JASMINE Laser interferometric high-precision geometry (angle and length) monitor for JASMINE

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..248..280n&link_type=abstract

A Giant Step: from Milli- to Micro-arcsecond Astrometry, Proceedings of the International Astronomical Union, IAU Symposium, Vol

Astronomy and Astrophysics

Astronomy

Instrumentation: Interferometers, Techniques: Interferometric, Telescopes

Scientific paper

The telescope geometry of JASMINE should be stabilized and monitored with the accuracy of about 10 to 100 pm or 10 to 100 prad of rms over about 10 hours. For this purpose, a high-precision interferometric laser metrology system is employed. Useful techniques for measuring displacements on extremely small scales are the wave-front sensing method and the heterodyne interferometrical method. Experiments for verification of measurement principles are well advanced.

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