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Measurement of the non-common vertex error of a double corner cube

Show simple item record Azizi, Alireza Marcin, Martin Moore, Douglas Moser, Steve Negron, John Paek, Eung-Gi Ryan, Daniel Abramovici, Alex Best, Paul Crossfield, Ian Nemati, Bijan Neville, Tim Platt, B. Wayne, Leonard 2006-11-16T15:14:33Z 2006-11-16T15:14:33Z 2006-08-13
dc.identifier.citation SPIE Optics & Photonics, San Diego, California, August 13-17, 2006. en
dc.identifier.clearanceno 06-1614
dc.description.abstract The Space Interferometry Mission (SIM) requires the control of the optical path of each interferometer with picometer accuracy. Laser metrology gauges are used to measure the path lengths to the fiiducial corner cubes at the siderostats. Due to the geometry of SIM a single corner cube does not have sufficient acceptance angle to work with all the gauges. Therefore SIM employs a double corner cube. Current fabrication methods are in fact not capable of producing such a double corner cube with vertices having sufficient commonality. The plan for SIM is to measure the non-commonalty of the vertices and correct for the error in orbit. SIM requires that the non-common vertex error (NCVE) of the double corner cube to be less than 6 μm. The required accuracy for the knowledge of the NCVE is less than 1 μm. This paper explains a method of measuring non-common vertices of a brassboard double corner cube with sub-micron accuracy. The results of such a measurement will be presented. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 635544 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. en
dc.subject non-common vertex en
dc.subject double corner cubes en
dc.subject interferometry en
dc.subject Space Interferometry Mission (SIM) en
dc.subject metrology en
dc.title Measurement of the non-common vertex error of a double corner cube en
dc.type Preprint en

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