Analysis of secondary mirror mold topography to Large Millimeter Telescope using fringe projection technique

Amalia Martínez; J. A. Rayas; Sergio Vázquez; Alberto Jaramillo

doi:10.1117/12.674606

10 February 2006 Analysis of secondary mirror mold topography to Large Millimeter Telescope using fringe projection technique

Amalia Martínez, J. A. Rayas, Sergio Vázquez, Alberto Jaramillo

Author Affiliations +

Proceedings Volume 6046, Fifth Symposium Optics in Industry; 60461X (2006) https://doi.org/10.1117/12.674606
Event: Fifth Symposium Optics in Industry, 2005, Santiago De Queretaro, Mexico

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.

Citation Download Citation

Amalia Martínez, J. A. Rayas, Sergio Vázquez, and Alberto Jaramillo "Analysis of secondary mirror mold topography to Large Millimeter Telescope using fringe projection technique", Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60461X (10 February 2006); https://doi.org/10.1117/12.674606

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available