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

Simon G. Rees; Paul Jolley; Michiel van der Hoeven; Andy Ridings; Maarten Blanken

doi:10.1117/12.552214

30 September 2004 INGRID: retrofitting an improved mechanism control system to an operational cryogenic instrument

Simon G. Rees, Paul Jolley, Michiel van der Hoeven, Andy Ridings, Maarten Blanken

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.552214
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

Simon G. Rees, Paul Jolley, Michiel van der Hoeven, Andy Ridings, and Maarten Blanken "INGRID: retrofitting an improved mechanism control system to an operational cryogenic instrument", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.552214

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available