Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume 54, Issue 6, Pages 819-832Publisher
OXFORD UNIV PRESS
DOI: 10.1093/pasj/54.6.819
Keywords
instrumentation : spectrographs
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The Faint Object Camera and Spectrograph (FOCAS) is a Cassegrain optical instrument for the Subaru Telescope. Its capabilities include 6'phi FOV direct imaging, low-resolution spectroscopy (R = 250-2000 with 0.4 slitwidth), multi-slit spectroscopy and polarimetry. We describe the overall design of FOCAS, its observing functions, and the performance verification procedures that have been carried out.
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