The on-orbit performance of the Galaxy Evolution Explorer

被引:286
作者
Morrissey, P
Schiminovich, D
Barlow, TA
Martin, DC
Blakkolb, B
Conrow, T
Cooke, B
Erickson, K
Fanson, J
Friedman, PG
Grange, R
Jelinsky, PN
Lee, SC
Liu, DK
Mazer, A
McLean, R
Milliard, B
Randall, D
Schmitigal, W
Sen, A
Siegmund, OHW
Surber, F
Vaughan, A
Viton, M
Welsh, BY
Bianchi, L
Byun, YI
Donas, J
Forster, K
Heckman, TM
Lee, YW
Madore, BF
Malina, RF
Neff, SG
Rich, RM
Small, T
Szalay, AS
Wyder, TK
机构
[1] CALTECH, Space Astrophys Lab, Pasadena, CA 91125 USA
[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[3] Lab Astrophys Marseille, F-13376 Marseille, France
[4] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[5] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[6] Yonsei Univ, Ctr Space Astrophys, Seoul 120749, South Korea
[7] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA
[8] CALTECH, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA
[9] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA
[10] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
关键词
space vehicles : instruments; surveys; telescopes; ultraviolet : general;
D O I
10.1086/424734
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report the first year's 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 1degrees.25 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.
引用
收藏
页码:L7 / L10
页数:4
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