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THERMOTREX'S OZONE-MEASURING DEVICE LAUNCHED ABOARD FRENCH SATELLITE

 SAN DIEGO, Nov. 3 /PRNewswire/ -- The POAM II (polar ozone aerosol measurement) instrument, designed and built by ThermoTrex Corporation (AMEX: TKN), was launched aboard the French SPOT 3 satellite on Sept. 25 and has already started transmitting data. In addition to helping scientists monitor the ozone layer, POAM II will contribute to the understanding of polar weather patterns and provide data on atmospheric turbulence that will be useful in designing space-based laser communication systems.
 POAM II was built under a contract from the Office of Naval Research (under the sponsorship of the Innovative Science and Technology Directorate of the Ballistic Missile Defense Organization). ThermoTrex, which received more than $6 million for this project, was responsible for both hardware and software. ThermoTrex scientists and engineers worked closely with the program's sponsors and with the French space agency, CNES, in Toulouse, France, and in French Guiana, the site of the launch.
 POAM II consists of nine telescopes and is mounted on one end of the satellite. The instrument will make measurements of the polar atmospheres as SPOT 3 passes over each pole 14 times a day. From these measurements, the concentrations of ozone, oxygen, aerosols, nitrogen dioxide, water vapor, and temperature at various altitudes can be determined. The data, which is being downlinked to U.S. Air Force ground stations all over the world, is being analyzed by scientists at the Naval Research Laboratory who will make it available to the international scientific community.
 "I'm proud of our engineers and scientists, who worked very hard to develop a piece of equipment that meets the rigorous demands of the government's program and of operating in space," said Dr. Ken Tang, executive vice president of ThermoTrex. "Of course we're all happy that we were able to meet the technological challenge, but we're also proud that we could make a contribution to ensuring that our planet is healthy."
 ThermoTrex Corporation develops advanced technology in electro-optic and electro-acoustic systems, signal processing, materials technology, lasers, and thermionic and thermoelectric direct-energy conversion. The company also manufactures and markets imaging systems for early detection of breast cancer. In addition, ThermoTrex is developing other commercial products for the medical imaging and avionics industries. ThermoTrex Corporation is a public subsidiary of Thermo Electron Corporation (NYSE: TMO).
 -0- 11/3/93
 /CONTACT: John Hatsopoulos of Thermo Electron, 617-622-1111/
 (TKN TMO)


CO: ThermoTrex; Thermo Electron ST: Massachusetts IN: ENV SU:

DJ -- NE003 -- 9995 11/03/93 09:09 EST
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Date:Nov 3, 1993
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