Share Email Print
cover

Proceedings Paper

The MOAO system of the IRMOS near-infrared multi-object spectrograph for TMT
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The near-Infrared Multi-Object Spectrograph (IRMOS) for TMT is one of the most powerful astronomical instruments ever envisioned. The combination of the collecting area of TMT, the unique image-sharpening capabilities of the Multi-Object Adaptive Optics (MOAO) system, and the multiplexing advantage of the multi-object integral-field spectra provided by the IRMOS back-end make it capable of addressing some of the leading scientific challenges of the coming decades. Here we present an overview of one potential IRMOS concept and then focus on the MOAO system. In particular we will describe our concept for the laser and natural guide star wavefront sensors, deformable mirrors and the calibration system of MOAO. For each of these design elements, we describe the key trade studies which help define each subsystem. From results of our studies, we assemble a MOAO ensquared energy budget. We find that 50% of the energy is ensquared within the 50 milli-arcsecond spatial pixel of the IRMOS integral field units for a wavelength of 1.65μm. Given the requirements placed on the MOAO system to achieve this performance, large ensquared energies can be achieved with even finer plate scales for wavelengths longer than 1.5μm.

Paper Details

Date Published: 11 July 2006
PDF: 12 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62694K (11 July 2006); doi: 10.1117/12.672177
Show Author Affiliations
David R. Andersen, NRC Herzberg Institute of Astrophysics (Canada)
Stephen S. Eikenberry, Univ. of Florida, Bryant Space Science Ctr. (United States)
Murray Fletcher, NRC Herzberg Institute of Astrophysics (Canada)
William Gardhouse, NRC Herzberg Institute of Astrophysics (Canada)
Brian Leckie, NRC Herzberg Institute of Astrophysics (Canada)
Jean-Pierre Véran, NRC Herzberg Institute of Astrophysics (Canada)
Don Gavel, Univ. of California, Santa Cruz (United States)
Richard Clare, California Institute of Technology (United States)
Rafael Guzman, Univ. of Florida, Bryant Space Science Ctr. (United States)
Laurent Jolissaint, NRC Herzberg Institute of Astrophysics (Canada)
Roger Julian, Univ. of Florida, Bryant Space Science Ctr. (United States)
William Rambold, Univ. of Florida, Bryant Space Science Ctr. (United States)


Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

© SPIE. Terms of Use
Back to Top