Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21548116h&link_type=abstract
American Astronomical Society, AAS Meeting #215, #481.16; Bulletin of the American Astronomical Society, Vol. 42, p.573
Astronomy and Astrophysics
Astrophysics
Scientific paper
The Joint Astrophysics Nascent Universe Satellite (JANUS) is a Small Explorer mission concept that completed a NASA-funded Phase A study in March 2009. We will describe the design and predicted performance characteristics of the 50-cm aperture Near-Infrared Telescope and imaging spectrograph (NIRT) on JANUS. The NIRT offers direct imaging and R 14 imaging spectroscopy over a 0.36 deg2 field of view, in a single 0.7-1.7 µm bandpass well-suited to discovery and characterization of luminous sources from the reionization epoch and Cosmic Dark Ages at redshifts z>5.8. Operationally, the role of the NIRT is to discover and characterize the young afterglows of z>5 gamma-ray bursts discovered by the X-ray Flash Monitor, and to carry out a large-area (20,000 deg2) survey for z>6 quasars. The NIRT design offers innovative solutions to multiple design challenges, including sub-arcsec pointing stability, thermal control, and the need for rapid, redundant, high cycle-count switching between its direct imaging and low-resolution imaging spectroscopic modes.
Herter Terry L.
JANUS Team
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