Abstract: A hand-held spectrograph-camera has been used by the Gemini-5 astronauts to obtain spectra of sunlight reflected from clouds in the region of the oxygen ?A? band near 7600 Å. The transmittance measurements at selected ...

Abstract: The balloon model of the Satellite Infrared Spectrometer has been flown with balloons at altitudes of about 30 km. from Palestine, Tex. and Sioux Falls, S. Dak. The instrument was calibrated in flight by reference to an ...