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UV Telescope

NSSDCA ID: 2003-017A-01

Mission Name: GALEX
Principal Investigator:Dr. Christopher R. Martin


GALEX carries a single f/6.0, Richey-Chretien UV telescope, with a 50-cm diameter primary, and a 22-cm secondary mirror. Beam-splitters direct the Near UV (NUV) and Far UV (FUV) components to separate photoelectric detectors of diameter 6.5 cm. In each, the photoelectrons are multiplied by a microchannel plate, and detected by the anode grid. The grid enables determination of the exact position of electron impact, by the time delay of each pulse at the two ends. The telescope has a field of view of 1.2 deg, and a resolutin of five arc-second, and enables either imaging or spectral composition of a single star/galaxy, by a rotatable wheel containing a clear window and a Grism. (Grism is a cross between a grating and a prism.) The URL,

provides detailed description of the instrument and the publicly available data products at the Mult-mission Archive at Space Telescope Science Institute:

Alternate Names

  • GALEX/UVTelescope


  • Astronomy: Ultraviolet

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. David SchiminovichCo-InvestigatorCalifornia Institute of
Ms. Amit SenInstrument ManagerNASA Jet Propulsion
Dr. Christopher R. MartinPrincipal InvestigatorCalifornia Institute of
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