
Proceedings Paper
GTC-EMIR configurable slit unit development detailsFormat | Member Price | Non-Member Price |
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Paper Abstract
The Configurable Slit Unit (CSU) for EMIR shall enable the possibility to generate a multi-slit configuration, a long slit,
or an imaging aperture at the entrance focal plane of the GTC-EMIR instrument. The CSU is therefore a cryogenic
reconfigurable slit mechanism. It contains 110 sliding bars which can be positioned within the 340x340mm wide
aperture of EMIR's instrument field of view.
Based on the results which haven been obtained in the previously performed demonstration programme, the current
developments have focused on the optimization of the performance and up scaling of the construction. Major progress
and improvement have been made on the position measurement of the slits, as a result of conceptual improvements in the
measurement system but also as a result of fundamental hardware changes. Furthermore an improvement of the thermal
household of the instrument will contribute to the position stability performance. Main development advances on several
aspects of the instrument design are presented. This work is performed under contract of the Instituto de Astrofisica de
Canarias as part of the development of the EMIR instrument to be installed at the GTC telescope.
Paper Details
Date Published: 18 July 2008
PDF: 8 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70180K (18 July 2008); doi: 10.1117/12.787907
Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)
PDF: 8 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70180K (18 July 2008); doi: 10.1117/12.787907
Show Author Affiliations
M. Teuwen, Janssen Precision Engineering B.V. (Netherlands)
H. Janssen, Janssen Precision Engineering B.V. (Netherlands)
R. Geurink, Janssen Precision Engineering B.V. (Netherlands)
H. Janssen, Janssen Precision Engineering B.V. (Netherlands)
R. Geurink, Janssen Precision Engineering B.V. (Netherlands)
M. Boots, Janssen Precision Engineering B.V. (Netherlands)
F. Garzón López, Instituto de Astrofisica de Canarias (Spain)
F. Garzón López, Instituto de Astrofisica de Canarias (Spain)
Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)
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