Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1000..596y&link_type=abstract
GAMMA-RAY BURSTS 2007: Proceedings of the Santa Fe Conference. AIP Conference Proceedings, Volume 1000, pp. 596-599 (2008).
Astronomy and Astrophysics
Astrophysics
Gamma-Ray Sources, Gamma-Ray Bursts, X-Ray, X- And Gamma-Ray Telescopes And Instrumentation
Scientific paper
In order to detect and trace the early phase of near-infrared (NIR) afterglows of Gamma Ray Bursts (GRBs) quickly, we are now developing the Okayama Astrophysical Observatory Wide-Field Camera, OAOWFC. The aperture size of OAOWFC is 91 cm. The focal plane is covered by a 2K×2K HAWAII2-RG detector with a pixel size of 18.5 μm×18.5 μm, resulting 0.95×0.95 deg2 field of view with an image scale of 1.6 arcsec/pixel. OAOWFC is designed to be a fully robotic instrument. This camera forms a part of Multicolor Imaging Telescopes for Survey and Monstrous Explosions (MITSuME), a multi telescope system dedicated to optical-NIR follow-up observations of GRB afterglows. Very wide field of view of OAOWFC enables us to catch GRB afterglows under less accurate localization sometimes given by the first alert. OAOWFC has an ability to detect bright GRB afterglow located at z = 10 easily, and it might be detectable at z = 18 if the conditions are met.
Kawai Nobuyuki
Nagayama Shogo
Ohta Kazutoshi
Okita Ki'ichi
Shimizu Yasuaki
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