Physics – Optics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apopt..22.2682p&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 22, Sept. 1, 1983, p. 2682-2685.
Physics
Optics
13
Airglow, Hydroxyl Emission, Lunar Eclipses, All Sky Photography, Atmospheric Tides, Photometry
Scientific paper
IR photographic and photometric observations of the OH airglow in the entire sky made at Albuquerque, New Mexico, during the total lunar eclipse of July 5-6, 1982, are reported. Images were obtained with an 8-mm, f/2.8 180-deg fisheye lens feeding a 40-mm red-sensitive two-stage electrostatic image intensifier through a 650-nm-cuton filter and recorded in 3 and 10-sec exposures every 5 min on type 2475 film. A zenith photometer with a 1-deg-diameter field was operated with a 10-nm-bandwidth 730-nm filter for calibration. Horizon-to-horizon east-west bands of increasing contrast and wavelengths decreasing from 60-90 to 30-40 km were observed drifting northward at about 15 m/sec, with a period of about 40 min; the photometric measurements confirm the photographic observations despite some interference from the Milky Way. The characteristics of these waves are shown to differ significantly from those of previously observed tidally associated ripples. The apparent fade-in speed (southward) of 300 m/sec suggests that an acoustic rather than a gravity wave is the driving force.
Adams Gene W.
Peterson Alan W.
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