Postupgrade performance of the 3.8-m United Kingdom Infrared Telescope (UKIRT)

Timothy G. Hawarden; Nicholas P. Rees; Timothy C. Chuter; Antonio C. Chrysostomou; Charles P. Cavedoni; Ralf-Rainer Rohloff; Eckhart Pitz; Donald G. Pettie; Richard J. Bennett; Eli Ettedgui-Atad

doi:10.1117/12.367622

29 October 1999 Postupgrade performance of the 3.8-m United Kingdom Infrared Telescope (UKIRT)

Timothy G. Hawarden, Nicholas P. Rees, Timothy C. Chuter, Antonio C. Chrysostomou, Charles P. Cavedoni, Ralf-Rainer Rohloff, Eckhart Pitz, Donald G. Pettie, Richard J. Bennett, Eli Ettedgui-Atad

Author Affiliations +

Proceedings Volume 3785, Advanced Telescope Design, Fabrication, and Control; (1999) https://doi.org/10.1117/12.367622
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The upgraded 3.8 m UK Infrared Telescope is now provided with: (1) tip-tilt image stabilization by a light-weighted secondary mirror on piezo-electric actuators, controlled by a fast guider sampling at >= 40 Hz on guide stars V m6; (2) active primary mirror figure and secondary mirror alignment control, via a regularly-maintained look-up table; (3) active focus measurements and correction by the fast guider, supplementing a focus maintenance model which corrects for elastic and thermal changes; (4) ventilation of the 2600 m³ dome by 16 apertures totalling 50 m²; (5) insulation of the underside of the concrete dome floor; and (6) internal air circulation during the day, to reduce heating of the upper telescope steelwork.

Citation Download Citation

Timothy G. Hawarden, Nicholas P. Rees, Timothy C. Chuter, Antonio C. Chrysostomou, Charles P. Cavedoni, Ralf-Rainer Rohloff, Eckhart Pitz, Donald G. Pettie, Richard J. Bennett, and Eli Ettedgui-Atad "Postupgrade performance of the 3.8-m United Kingdom Infrared Telescope (UKIRT)", Proc. SPIE 3785, Advanced Telescope Design, Fabrication, and Control, (29 October 1999); https://doi.org/10.1117/12.367622

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