22 July 2014 A 200-GHz telescope unit for the QUIJOTE CMB Experiment
Author Affiliations +
Proceedings Volume 9145, Ground-based and Airborne Telescopes V; 914524 (2014); doi: 10.1117/12.2056615
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada
Abstract
Experiment QUIJOTE (Q-U-I JOint TEnerife) is a scientific collaboration, leaded by the Instituto de Astrofísica de Canarias (IAC), which can measure the polarization of the Cosmic Microwave Background (CMB) in the range of frequency up to 200 GHz, at angular scales of 1°. The project is composed of 2 telescopes and 3 instruments, located in Teide Observatory (Tenerife, Spain).

After the successful delivery of the first telescope (operative since 2012), Idom is currently involved on the turn key supply of the second telescope (phase II). The work started in June 2013 and it will be completed in a challenging period of 12 months (operative at the beginning of July 2014), including design, factory assembly and testing, transport and final commissioning on site.

This second unit will improve the opto-mechanical performance and maintainability. The telescope will have an unlimited rotation capacity in azimuth axis and a range of movement between 25°-95° in elevation axis. An integrated rotary joint will transmit fluid, power and signal to the rotary elements. The pointing and tracking accuracy will be significantly below to specification: 1.76 arcmin and 44 arcsec, respectively.

This project completes Idom´s contribution during phase I, which also comprises the integration and functional tests for the 5 polarimeters of the first instrument in Bilbao headquarters, and the design and supervision of the building which protects both telescopes, including the installation and commissioning of the mechanism for shutters aperture.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rubén Sanquirce, Borja Etxeita, Gaizka Murga, Esther Fernandez, Iñaki Sainz, Vicente Sánchez, Teodora A. Viera-Curbelo, María F. Gómez, Marta Aguiar-Gonzalez, Roger J. Hoyland, Ángeles R. Pérez de Taoro, Afrodisio Vega, Rafael Rebolo-López, Jose Alberto Rubiño, "A 200-GHz telescope unit for the QUIJOTE CMB Experiment", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 914524 (22 July 2014); doi: 10.1117/12.2056615; https://doi.org/10.1117/12.2056615
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KEYWORDS
Telescopes

Observatories

Phase modulation

Chemical elements

Computer programming

Optical instrument design

Polarimetry

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