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Moving Optical Systems of IRAIT: Design and Construction

Published online by Cambridge University Press:  23 May 2007

N. Epchtein ,
M. Candidi ,
J. Colomé ,
C. Abia ,
I. Domínguez ,
J. Isern ,
G. Tosti ,
M. Busso ,
G. Nucciarelli  and
F. Roncella
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J. Colomé*
Affiliation:
Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain
C. Abia
Affiliation:
Dpto. Física Teórica y del Cosmos, Universidad de Granada, Granada, Spain
I. Domínguez
Affiliation:
Dpto. Física Teórica y del Cosmos, Universidad de Granada, Granada, Spain
J. Isern
Affiliation:
Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain Institut de Ciències de l'Espai (CSIC-IEEC), Barcelona, Spain
G. Tosti
Affiliation:
Dipartimento di Fisica, Universitá di Perugia, Perugia, Italy
M. Busso
Affiliation:
Dipartimento di Fisica, Universitá di Perugia, Perugia, Italy
G. Nucciarelli
Affiliation:
Dipartimento di Fisica, Universitá di Perugia, Perugia, Italy
F. Roncella
Affiliation:
Dipartimento di Fisica, Universitá di Perugia, Perugia, Italy
O. Straniero
Affiliation:
INAF – Osservatorio di Teramo, Teramo, Italy
M. Dolci
Affiliation:
INAF – Osservatorio di Teramo, Teramo, Italy
*
[email protected]
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Abstract

The IRAIT (International Robotic Antarctic Infrared Telescope) project(Tosti et al. , 2006, Proc. 6267-29 V. 2) is based on a 80 cm aperturetelescope to observe in the infrared range. It is due to start operationsin spring 2008, several months after installation in Dome C (Antarctica).We present the contributions made to such project by the Institute forSpace Studies of Catalonia (IEEC) and the University of Granada, whoseparticipation is mainly focused in developing the moving optical systemfor the secondary (M2) and tertiary (M3) mirrors of the telescope. Movingparts of the optical system provide focusing and chopping capabilities,implemented in M2, and a rotation mechanism, implemented in M3, allowobservation in either Nasmyth foci. The work package includes the designand construction of both mirrors, the mechanical supports, the electronicsand the control software, all prepared to work at the low temperatures atAntarctica. A Spanish company, NTE, was contracted to carry out the designand manufacture. Tests at low temperature and integration in the telescopehave been done during summer 2006.


Type
Research Article
Information
European Astronomical Society Publications Series , Volume 25: 1st ARENA Conference on "Large Astronomical Infrastructures at CONCORDIA, prospects and constraints for Antarctic Optical/IR Astronomy" , 2007 , pp. 221 - 224
Copyright
© EAS, EDP Sciences, 2007

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