Spacelab I. Expérience ondes dans la couche émissive OH.

The Spacelab 1 infrared camera which was used to investigate OH emission structures in the earth's upper atmosphere is described. The instrument consists of an f/0.95 25 mm focal lens, a photocathode amplifier tube, a 16 mm camera, and LEDs and photodiodes. To achieve a better sky-earth image, the instrument's optical axis was perpendicular to the longitudinal axis of the Shuttle, and was tilted 18 degrees to the wing plane. The instrument operated as anticipated for a total time of 528 minutes. Observations covered approximately 2 x 10 to the 8th sq km, or 40 percent of the earth's surface. The results of the observations will allow the plotting of a wave map of an 85-km altitude region and better knowledge of these structures may enable the correction of infrared photometric observations.