Concepedia

FOCAS: faint object camera and spectrograph for the Subaru Telescope

Nobunari Kashikawa, Motoko Inata, Masanori Iye, Koji S. Kawabata, Kiichi Okita, George Kosugi, Youichi Ohyama, Toshiyuki Sasaki, K. Sekiguchi, Tadafumi Takata,

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2000 · 29 citations · 0 references

DOI

Concepts

Natural SciencesAstronomyPhysicsOptical AstronomyOpticsSpectroscopyObservatory InstrumentationOptical InstrumentationTelescope OpticsLow-resolution SpectroscopyOptical Telescope SystemsSlit SpectroscopyTelescopes

Abstract

Faint object camera and spectrograph, FOCAS, is a Cassegrain optical instrument of Subaru telescope. It has a capability of 6 arcmin FOV direct imaging, low resolution spectroscopy, multi-slit spectroscopy as well as polarimetry. Only the imaging mode has been available so far. The overall design, the observing functions, and the preliminary performance verifications of FOCAS will be presented.