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The EXIST Infra-Red Telescope System: Design and PerformanceThe Infra-Red Telescope is a critical element of the EXIST (Energetic X-Ray Imaging Survey Telescope) observatory. It is a passively cooled 1.lm visible/infrared telescope. The primary goal of the IRT is to obtain photometric and spectroscopic measurements of high redshift (>6) gamma ray burst afterglows to study the nature of these enigmatic events and their environments, and to use them as probes of the composition and ionization state of the intergalactic medium of the young universe. The IRT will provide a prompt follow up (within three minutes) of the transient discovered by the EXIST with exceptional NIR sensitivity (AB=24 in 100s) surpassing HST in the infrared due to its passively cooled (- 30 C) mirror. Its optical design and spectral coverage is tailored to the high redshift transient events that require prompt pointing, identification, accurate photometry and both low and high resolution spectroscopy. Here we describe the telescope, its instrument complement, and the cooling systems which provide its remarkable sensitivity
Document ID
20100003023
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Moseley, Samuel H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
January 3, 2010
Subject Category
Astronomy
Meeting Information
Meeting: 215th American Astronomical Society (AMS) Conference
Location: Washington, DC
Country: United States
Start Date: January 3, 2010
End Date: January 7, 2010
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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