Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-11
Astrophys.J.619:L7-L10,2005
Astronomy and Astrophysics
Astrophysics
This paper will be published as part of the Galaxy Evolution Explorer (GALEX) Astrophysical Journal Letters Special Issue
Scientific paper
10.1086/424734
We report the first year on-orbit performance results for the Galaxy Evolution Explorer (GALEX), a NASA Small Explorer that is performing a survey of the sky in two ultraviolet bands. The instrument comprises a 50 cm diameter modified Ritchey-Chretien telescope with a 1.25 degree field of view, selectable imaging and objective grism spectroscopic modes, and an innovative optical system with a thin-film multilayer dichroic beam splitter that enables simultaneous imaging by a pair of photon counting, microchannel plate, delay line readout detectors. Initial measurements demonstrate that GALEX is performing well, meeting its requirements for resolution, efficiency, astrometry, bandpass definition and survey sensitivity.
Barlow Thomas A.
Bianchi Luciana
Blakkolb Brian
Byun Yong-Ik.
Conrow Tim
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