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Proceedings Paper

The science calibration system for the TMT NFIRAOS and client instruments: requirements and design studies
Author(s): Dae-Sik Moon; Luc Simard; Dafna Sussman; David Crampton; Max Millar-Blanchaer; Raymond G. Carlberg; Vainatey Kulkarni; Muhammad O. Khan; Evgeny Gorelik; Andy Kim; Mark A. Roxas; Jeffrey Osborne; Glen Herriot; James E. Larkin; David LaFrenière
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Paper Abstract

We present the results of the design studies of the science calibration system for the adaptive optics and infrared instruments of the Thirty Meter Telescope. The two major requirements of the science calibration system are to provide pupil-simulated telescope beams to the adaptive optics system for calibration of the telescope pupil and to provide flatfielding and wavelength-calibration illuminations to client instruments of the adaptive optics system. Our current system is composed an integrating sphere with calibration light sources, a retractable pupil-mask system, a lens assembly consisting of a pair of achromatic triplets, and fold mirrors. This system appears to be capable of producing highlyuniform of f/15 beams at the telescope focal plane and pupil simulation at a pupil location within the adaptive optics system. We describe the present design and development of the calibration system along with relevant analyses.

Paper Details

Date Published: 21 July 2010
PDF: 8 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77355N (21 July 2010); doi: 10.1117/12.857469
Show Author Affiliations
Dae-Sik Moon, Univ. of Toronto (Canada)
Luc Simard, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
Dafna Sussman, Univ. of Toronto (Canada)
David Crampton, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
Max Millar-Blanchaer, Univ. of Toronto (Canada)
Raymond G. Carlberg, Univ. of Toronto (Canada)
Vainatey Kulkarni, Univ. of Toronto (Canada)
Muhammad O. Khan, Univ. of Toronto (Canada)
Evgeny Gorelik, Univ. of Toronto (Canada)
Andy Kim, Univ. of Toronto (Canada)
Mark A. Roxas, Univ. of Toronto (Canada)
Jeffrey Osborne, Univ. of Toronto (Canada)
Glen Herriot, Herzberg Institute of Astrophysics, National Research Council Canada (Canada)
James E. Larkin, Univ. of California, Los Angeles (United States)
David LaFrenière, Univ. of Toronto (Canada)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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