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22 July 2016 Coordinate metrology of a primary surface composite panel from the Large Millimeter Telescope
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The Large Millimeter Telescope (LMT) is a single-dish fully-steerable radio telescope presently operating with a 32.5 m parabolic primary reflector, in the process of extension to 50 m. The project is managed by the Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE) in México, and the University of Massachusetts Amherst, USA. A laminated surface panel from the LMT primary reflector has been subjected to a surface measurement assay at Mexico’s National Metrology Center (CENAM). Data obtained using a coordinate measuring machine and laser tracker owned by CENAM is compared with measurements using an identical model laser tracker and the photogrammetry technique, the latter systems owned and operated by the LMT. All measurements were performed within the controlled metrology environment at CENAM. The measurement exercise is intended to prepare the groundwork for converting this spare surface panel into a calibrated work-piece. The establishment of a calibrated work-piece provides quality assurance for metrology through measurement traceability. It also simplifies the evaluation of measurement uncertainty for coordinate metrology procedures used by the LMT project during reflector surface qualification.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David M. Gale, Maribel Lucero Álvarez, Lizeth Cabrera Cuevas, Andrea Leon-Huerta, Edgar Arizmendi Reyes, Octavio Icasio Hernández, David Castro Santos, Emilio Hernández Ríos, Esteban Tecuapetla Sosa, Carlos Tzile Torres, and Miguel Viliesid Alonso "Coordinate metrology of a primary surface composite panel from the Large Millimeter Telescope", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991211 (22 July 2016);

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