Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21715707r&link_type=abstract
American Astronomical Society, AAS Meeting #217, #157.07; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
RATIR (Reionization and Transients Infrared instrument) will be a hybrid optical/near IR imager that will utilize the "J-band dropout" to rapidly
identify very high redshift (VHR) gamma-ray bursts (GRBs) from a sample of all observable Swift bursts. Our group at GSFC is developing the instrument in collaboration with UC Berkeley (UCB) and University of Mexico (UNAM). RATIR has both a visible and IR camera, which give it access to 8 bands spanning visible and IR wavelengths. The instrument implements a combination of filters and dichroics to provide the capability of performing photometry in 4 bands simultaneously. The GSFC group leads the design and construction of the instrument's IR camera, equipped with two HgCdTe 2k x 2k Teledyne detectors. The cryostat housing these detectors is cooled by a mechanical cryo-compressor, which allows uninterrupted operation on the telescope. The host 1.5-m telescope, located at the UNAM San Pedro Martir Observatory, Mexico, has recently undergone robotization, allowing for fully automated, continuous operation. After commissioning in the spring of 2011, RATIR will dedicate its time to obtaining prompt follow-up observations of GRBs and identifying VHR GRBs, thereby providing a valuable tool for studying the epoch of reionization.
Alardin W.
Bigelow Bruce C.
Bloom Jonathan
Butler Nat
Farah Alejandro
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