The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview

Abstract

IRIS is a near-infrared (0.84 to 2.4 microns) integral field spectrograph and wide-field imager being developed for first light with the Thirty Meter (TMT). It mounts to the advanced optics (AO) system NFIRAOS and has integrated on-instrument wavefront sensors (OIWFS) to achieve diffraction-limited spatial resolution at wavelengths longer than 1 micron. With moderate spectral resolution (R ~4,000 - 8,000) and large bandpass over a continuous field of view, IRIS will open new opportunities in virtually every area of astrophysical science. It will be able to resolve surface features tens of kilometers across Titan, while also mapping the distant galaxies at the scale of an individual star forming region. This paper summarizes the entire design and capabilities, and includes the results from the nearly completed preliminary design phase.

13 pages, SPIE proceeedings

References in corpus (7)

• NFIRAOS First Facility AO System for the Thirty Meter Telescope
• The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview
• The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview
• The Infrared Imaging Spectrograph (IRIS) for TMT: the ADC optical design
• The infrared imaging spectrograph (IRIS) for TMT: on-instrument wavefront sensors and NFIRAOS interface
• The InfraRed Imaging Spectrograph (IRIS) for TMT: Reflective ruled diffraction grating performance testing and discussion
• The Infrared Imaging Spectrograph (IRIS) for TMT: optical design of IRIS imager with "Co-axis double TMA"

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