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Galex
Part of LEOStar-2
Galex
Galex
American ultraviolet astronomy satellite. The Galaxy Evolution Explorer (GALEX) was an orbiting space telescope that was to observe galaxies in ultraviolet wavelengths. Astronomy, UV satellite built by Orbital Sciences Corporation (OSC) for NASA, USA. Launched 2003. Used the LEOStar-2 bus.

Status: Operational 2003. First Launch: 2003-04-28. Last Launch: 2003-04-28. Number: 1 . Gross mass: 280 kg (610 lb).

Such observations would provide data how galaxies, the basic structures of our Universe, evolve and change. Additionally, GALEX would probe the causes of star formation during a period when most of the stars and elements we see today had their origins. Led by the California Institute of Technology, GALEX was to conduct several first-of-a-kind sky surveys, including an extra-galactic ultraviolet all-sky survey.

NASA NSSDC Master Catalog Description

The Galaxy Evolution Explorer (GALEX) is an orbiting space ultraviolet telescope, which explores the origin and evolution of galaxies, and the origins of stars and heavy elements over the redshift range of z between 0 and 2. GALEX will conduct an all-sky imaging survey, a deep imaging survey, and a survey of 200 galaxies nearest to the Milky Way Galaxy. As well, GALEX will perform three spectroscopic surveys over the 135-300 nanometer band. GALEX has a planned 29 month mission, and is a part of the Small Explorers (SMEX) program.

The spacecraft will be three-axis stabilized, with power coming from four fixed solar panels. The spacecraft bus is from Orbital Sciences Corporation based on OrbView 4. The telescope is a 50-cm Modified Ritchey-Chretien with a rotating grism. GALEX uses the first ever UV light dichroic beam-splitter flown in space to direct photons to the Near UV (175-280 nanometers) and Far UV (135-174 nanometers) microchannel plate detectors. Each of the two detectors has a 65 millimeter diameter. The target orbit is 670 km circular and inclined at 28.5 degrees to the equator.


More at: Galex.

Family: Astronomy, Ultraviolet astronomy satellite. Country: USA. Launch Vehicles: Pegasus, Pegasus XL. Launch Sites: Mayport DZ. Agency: JPL, NASA, OSC. Bibliography: 2, 6511, 12468.
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GalexGalex
Credit: Manufacturer Image



2003 April 28 - . 12:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Mayport DZ. Launch Pad: 29.0 N x 78.5 W. Launch Platform: L-1011. LV Family: Pegasus. Launch Vehicle: Pegasus XL.

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