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Proceedings Paper

Analysis of secondary mirror mold topography to Large Millimeter Telescope using fringe projection technique
Author(s): Amalia Martínez; J. A. Rayas; Sergio Vázquez; Alberto Jaramillo
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Paper Abstract

The Large Millimeter Telescope (LMT)1 is a 50 m diameter millimeter-wave telescope designed for principal operation at wavelengths between 1mm and 4mm. The LMT secondary mirror will have a diameter of approximately 2.6 meters and focal ratio of .35. The purpose of this study was to implement the incoherent fringe projection technique and the spatial phase synchronous method to measure the secondary mirror mold profiling. The obtained topography is compared with the conic surface generated synthetically. We considered that mold should be hyperboloid surface with paraxial curvature of 1764.9 mm and conic constant of -1.1474. We will discuss the preliminary results where it is obtained a RMS of 0.624 cm.

Paper Details

Date Published: 10 February 2006
PDF: 6 pages
Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60461X (10 February 2006); doi: 10.1117/12.674606
Show Author Affiliations
Amalia Martínez, Ctr. de Investigaciones en Óptica (Mexico)
J. A. Rayas, Ctr. de Investigaciones en Óptica (Mexico)
Sergio Vázquez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
Alberto Jaramillo, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)


Published in SPIE Proceedings Vol. 6046:
Fifth Symposium Optics in Industry
Eric Rosas; Rocío Cardoso; Juan C. Bermudez; Oracio Barbosa-García, Editor(s)

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