Share Email Print
cover

Proceedings Paper

Cryogenic filter wheel design for an infrared instrument
Author(s): Joaquín Azcue; Carlos Villanueva; Antonio Sánchez; Cristina Polo; Manuel Reina; Angel Carretero; Josefina Torres; Gonzalo Ramos; Luis Miguel Gonzalez; Maria Dolores Sabau; Francisco Najarro; Jesús Martin Pintado
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In the last two decades, Spain has built up a strong IR community which has successfully contributed to space instruments, reaching Co-PI level in the SPICA mission (Space Infrared Telescope for Cosmology and Astrophysics). Under the SPICA mission, INTA, focused on the SAFARI instrument requirements but highly adaptable to other missions has designed a cryogenic low dissipation filter wheel with six positions, taking as starting point the past experience of the team with the OSIRIS instrument (ROSETTA mission) filter wheels and adapting the design to work at cryogenic temperatures. One of the main goals of the mechanism is to use as much as possible commercial components and test them at cryogenic temperature. This paper is focused on the design of the filter wheel, including the material selection for each of the main components of the mechanism, the design of elastic mount for the filter assembly, a positioner device designed to provide positional accuracy and repeatability to the filter, allowing the locking of the position without dissipation. In order to know the position of the wheel on every moment a position sensor based on a Hall sensor was developed. A series of cryogenic tests have been performed in order to validate the material configuration selected, the ball bearing lubrication and the selection of the motor. A stepper motor characterization campaign was performed including heat dissipation measurements. The result is a six position filter wheel highly adaptable to different configurations and motors using commercial components. The mechanism was successfully tested at INTA facilities at 20K at breadboard level.

Paper Details

Date Published: 26 September 2014
PDF: 15 pages
Proc. SPIE 9219, Infrared Remote Sensing and Instrumentation XXII, 92190B (26 September 2014); doi: 10.1117/12.2060969
Show Author Affiliations
Joaquín Azcue, Instituto Nacional de Técnica Aeroespacial (Spain)
Carlos Villanueva, Instituto Nacional de Técnica Aeroespacial (Spain)
Antonio Sánchez, Instituto Nacional de Técnica Aeroespacial (Spain)
Cristina Polo, Instituto Nacional de Técnica Aeroespacial (Spain)
Manuel Reina, Instituto Nacional de Técnica Aeroespacial (Spain)
Angel Carretero, Instituto Nacional de Técnica Aeroespacial (Spain)
Josefina Torres, Ctr. de Astrobiología (Spain)
Gonzalo Ramos, Instituto Nacional de Técnica Aeroespacial (Spain)
Luis Miguel Gonzalez, Instituto Nacional de Técnica Aeroespacial (Spain)
Maria Dolores Sabau, Instituto Nacional de Técnica Aeroespacial (Spain)
Francisco Najarro, Ctr. de Astrobiología (Spain)
Jesús Martin Pintado, Instituto Nacional de Técnica Aeroespacial (Spain)


Published in SPIE Proceedings Vol. 9219:
Infrared Remote Sensing and Instrumentation XXII
Marija Strojnik Scholl; Gonzalo Páez, Editor(s)

© SPIE. Terms of Use
Back to Top