Encyclopedia Astronautica
EUVE


American ultraviolet astronomy satellite. One launch, 1992.06.07. The EUVE Extreme Ultra-Violet Explorer mission mapped space in the 70- to 760-angstrom portion of the spectrum and conducted detailed ultraviolet examinations of selected celestial targets.

The objectives of the EUVE Extreme Ultra-Violet Explorer mission were: (1) produce a high-sensitivity "all-sky" survey in the 70- to 760-angstrom portion of the spectrum; (2) perform a "deep survey" of a strip of the sky along the ecliptic with extremely high sensitivity; (3) perform follow-up spectroscopic observations on bright extreme ultraviolet point sources; (4) study stellar evolution and the local stellar population; (5) investigate energy transport in stellar atmospheres; and (6) study ionization and opacity of the interstellar medium. The initial "all-sky" survey was completed in January 1993, and a Guest Observer program was initiated in February 1993. EUVE was controlled from the Centre for EUV Astrophysics at the University of California, Berkeley. The spacecraft was based on the NASA/Fairchild Multi-Mission Spacecraft (MMS) bus and was 3-axis stabilized. Downlink was through TDRSS at 512 kbit/sec. EUVE was designed for on-orbit servicing by the Shuttle. The payload included three grazing incidence UV telescopes covering 80-900 angstroms (188 kg each) and one EUV spectrometer (323 kg). The scanning telescopes compiled all-sky maps over 80-900 angstroms with positional accuracy of 0.1 deg. The spectrometer observed in the anti-Sun direction along the ecliptic, to complete a survey in two bands between 80-500 angstroms.

AKA: Extreme Ultraviolet Explorer.
Gross mass: 3,275 kg (7,220 lb).
Height: 4.50 m (14.70 ft).
First Launch: 1992.06.07.
Number: 1 .

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Associated Countries
See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Launch Vehicles
  • Delta American orbital launch vehicle. The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Delta began as Thor, a crash December 1955 program to produce an intermediate range ballistic missile using existing components, which flew thirteen months after go-ahead. Fifteen months after that, a space launch version flew, using an existing upper stage. The addition of solid rocket boosters allowed the Thor core and Able/Delta upper stages to be stretched. Costs were kept down by using first and second-stage rocket engines surplus to the Apollo program in the 1970's. Continuous introduction of new 'existing' technology over the years resulted in an incredible evolution - the payload into a geosynchronous transfer orbit increasing from 68 kg in 1962 to 3810 kg by 2002. Delta survived innumerable attempts to kill the program and replace it with 'more rationale' alternatives. By 2008 nearly 1,000 boosters had flown over a fifty-year career, and cancellation was again announced. More...
  • Delta 2 6000 American orbital launch vehicle. The Delta 6000 series used the Castor 4A strap-ons with the ultimate Extra Extended Long Tank core with RS-27 engine. More...
  • Delta 6920-X Three stage vehicle consisting of 9 x Castor 4A + 1 x EELT Thor/RS-27+ 1 x Delta K with 3.05 m (10 foot) diameter fairing More...

Associated Manufacturers and Agencies
  • Fairchild American manufacturer of rockets, spacecraft, and rocket engines. Fairchild, USA. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: here.

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • Cape Canaveral LC17A Delta launch complex. Part of a dual launch pad complex built for the Thor ballistic missile program in 1956. Pad 17A supported Thor, Delta, and Delta II launches into the 21st Century. More...

EUVE Chronology


1992 June 7 - . 16:40 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Delta. Launch Vehicle: Delta 6920-X. LV Configuration: Delta 6920-10 D210.
  • EUVE - . Mass: 3,275 kg (7,220 lb). Nation: USA. Agency: NASA Greenbelt. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: EUVE. Decay Date: 2002-01-31 . USAF Sat Cat: 21987 . COSPAR: 1992-031A. Apogee: 524 km (325 mi). Perigee: 510 km (310 mi). Inclination: 28.4000 deg. Period: 95.00 min. Extreme Ultra-Violet Explorer; mapped galactic EUV sources. The Extreme Ultraviolet Explorer was switched off on February 2, 2001. NASA decided to terminate funding for the mission, even though the spacecraft was still operating well. The sky survey was completed in January 1993 and after that the EUVE was used by guest astronomers for observations of specific targets. The final observations were made on January 26, 2001. After end-of-life tests of the never-used backup high voltage supplies and checking the remaining battery capacity, EUVE was stabilized pointing away from the Sun and sent into safehold at 2359 GMT on January 31. The transmitters were commanded off on February 2.

1993 January - .
  • EUVE completes initial "all-sky" survey - . Nation: USA. Spacecraft: EUVE. Summary: A Guest Observer program was initiated in February, 1993..

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