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Proceedings Paper

INGRID: retrofitting an improved mechanism control system to an operational cryogenic instrument
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Paper Abstract

This paper describes an engineering programme to retrofit an improved mechanism control system to the Isaac Newton Group Red Imaging Device (INGRID), the infrared camera at the William Herschel Telescope. INGRID is an operational instrument and engineering upgrades need to be considered carefully with a view to minimising risks to the instrument and ensuring that it is back in service on the due date. A number of alternative mechanical arrangements were considered; different stepper motor candidates were assessed together with the electronics to drive them. Motor drive parameters were optimised to increase the speed of optical setup. Finally, different technologies were considered for improving the arrangements for sensing the position of the instrument's mechanism wheels. The paper reports on the results of this programme and lessons learned.

Paper Details

Date Published: 30 September 2004
PDF: 13 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.552214
Show Author Affiliations
Simon G. Rees, Isaac Newton Group of Telescopes (Spain)
Paul Jolley, Isaac Newton Group of Telescopes (Spain)
Michiel van der Hoeven, Isaac Newton Group of Telescopes (Spain)
Andy Ridings, Isaac Newton Group of Telescopes (Spain)
Maarten Blanken, Isaac Newton Group of Telescopes (Spain)

Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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