Word: violet
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After 11 months in orbit, a satellite telescope designed here has mapped 7 per cent of the sky and is still sending back new information on ultra-violet light from distant stars. Analysis of data already received from the satellite has yielded several results...
...visible light region of this spectrum would show up as color bands, but the invisible ultra-violet rays can be detected only by a special electric tube. In the experiment, this tube acts like a television camera, converting the ultra-violet rays to electric impulses that are transmitted to earth...
...different wavelengths or areas of the spectrum. A second motor keeps the telescope aimed at a single point, or else it shifts the entire telescope back and forth to scan small areas of the sun. It thus obtains a television picture in a particular type of ultra-violet light...
...ordinary satellite takes the same type of data continuously," said Martin S. Huber, a Research Associate who calibrated the experiment. "But we have a real observatory with an almost infinite number of observation possibilities." The telescope can view the sun in one of 10,000 different wavelengths of ultra-violet light and can aim at a single point, take a picture of the entire sun, or scan an area only 1/15 the size of the sun's visible disc. Where earlier OSO satellites were able to take only one picture of the entire surface every 5 minutes, this telescope...
...sounding rocket called the Acrobee 150 was launched on September 11 to measure a section of the sun's ultra-violet spectrum very close to the region measured by OSO-VI. The rocket's readings actually overlapped OSO's in one small region, and the two instruments thus double-checked each other's operation. After four minutes of observation above White Sands, New Mexico, the rocket parachuted back to earth. "It was recovered so well that to a casual glance, you could not really be sure it had been launched," Parkinson said. The rocket will be repaired and flown again...