Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21540207m&link_type=abstract
American Astronomical Society, AAS Meeting #215, #402.07; Bulletin of the American Astronomical Society, Vol. 36, p.1111
Astronomy and Astrophysics
Astronomy
Scientific paper
The Infra-Red Telescope is a critical element of the EXIST (Energetic X-Ray Imaging Survey Telescope) observatory. It is a passively cooled 1.1m 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 the their environments, and to use them as probes of the composition and ionization state of the intergalactiic 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 sensitivitiy (AB=24 in 100s) surpassing HST in the infrared due to its passively cooled (-30ºC) mirror. Its optical design and spectral coverage is tailored to the high redshift transient events that require prompt pointing, identification, accurate phototmetry and both low and high resolution spectroscopy. Here we describe the telescope, its instrument complement, and the cooling systems which provide its remarkable sensitivity.
Allen Ben
EXIST Team
Golisano Craig
Gong Qihuang
Grindlay Jonathan
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