Progress of the UKIRT Upgrades Program

Timothy G. Hawarden; Charles P. Cavedoni; Timothy C. Chuter; Ivan A. Look; Nicholas P. Rees; Donald G. Pettie; Richard J. Bennett; Eli Ettedgui-Atad; John W. Harris; Colin M. Humphries; Brian Mack; Eckhart Pitz; Andreas Glindemann; Stefan Hippler; Ralf-Rainer Rohloff; Karl Wagner

doi:10.1117/12.269048

21 March 1997 Progress of the UKIRT Upgrades Program

Timothy G. Hawarden, Charles P. Cavedoni, Timothy C. Chuter, Ivan A. Look, Nicholas P. Rees, Donald G. Pettie, Richard J. Bennett, Eli Ettedgui-Atad, John W. Harris, Colin M. Humphries, Brian Mack, Eckhart Pitz, Andreas Glindemann, Stefan Hippler, Ralf-Rainer Rohloff, Karl Wagner

Author Affiliations +

Proceedings Volume 2871, Optical Telescopes of Today and Tomorrow; (1997) https://doi.org/10.1117/12.269048
Event: Optical Telescopes of Today and Tomorrow, 1996, Landskrona/Hven, Sweden

Abstract

The 3.8 m UK infrared telescope (UKIRT) is currently the focus of an upgrades program to improve its imaging performance, ideally to approach its diffraction limit in the near-IR at 2.2 micrometer, with FWHM approximately 0.'12. This program is now in its late stages. All the new systems have been designed, most have been manufacture and many have been installed. A new top end carries an adaptive tip-tilt secondary mirror with active precision alignment, which, with low-order active control of the primary mirror, should provide the desired intrinsic optical performance. The adaptive tip- tilt system will correct image motion from telescope vibrations and drive errors and from atmospheric wavefront tilt; delivered images are expected regularly to be less than 0.'5 over wide fields, and within a factor 2 or so of the diffraction limit, at least inside an isoplanatic patch of order an arcmin radius. To reduce facility seeing the primary mirror has been equipped with a ventilation system and will receive a 5 kW cooling system; the dome is being equipped with sixteen closable apertures to permit natural wind flushing, which can be assisted by the building air handling system in low winds. It is hoped that facility seeing -- excluding boundary layer effects -- will be imperceptible during approximately 85% of observable time. The upgraded UKIRT should be well capable of exploiting fully the very best conditions on Mauna Kea.

Citation Download Citation

Timothy G. Hawarden, Charles P. Cavedoni, Timothy C. Chuter, Ivan A. Look, Nicholas P. Rees, Donald G. Pettie, Richard J. Bennett, Eli Ettedgui-Atad, John W. Harris, Colin M. Humphries, Brian Mack, Eckhart Pitz, Andreas Glindemann, Stefan Hippler, Ralf-Rainer Rohloff, and Karl Wagner "Progress of the UKIRT Upgrades Program", Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); https://doi.org/10.1117/12.269048

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