High resolution imaging of the Venus night side using a Rockwell 128x128 HgCdTe array

Details High resolution imaging of the Venus night side using a Rockwell 128x128 HgCdTe array High resolution imaging of the Venus night side using a Rockwell 128x128 HgCdTe array

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989tidt.work..231h&link_type=abstract

In its Proceedings of the Third Infrared Detector Technology Workshop p 231-235 (SEE N90-21313 14-35)

Physics

1

Cameras, High Resolution, Imaging Techniques, Infrared Radiation, Infrared Spectrometers, Mercury Cadmium Tellurides, Night, Planetary Radiation, Venus (Planet), Venus Atmosphere, Brightness Temperature, Cloud Cover, Rotation, Thermal Radiation

Scientific paper

The University of Hawaii operates an infrared camera with a 128x128 HgCdTe detector array on loan from JPL's High Resolution Imaging Spectrometer (HIRIS) project. The characteristics of this camera system are discussed. The infrared camera was used to obtain images of the night side of Venus prior to and after inferior conjunction in 1988. The images confirm Allen and Crawford's (1984) discovery of bright features on the dark hemisphere of Venus visible in the H and K bands. Our images of these features are the best obtained to date. Researchers derive a pseudo rotation period of 6.5 days for these features and 1.74 microns brightness temperatures between 425 K and 480 K. The features are produced by nonuniform absorption in the middle cloud layer (47 to 57 Km altitude) of thermal radiation from the lower Venus atmosphere (20 to 30 Km altitude). A more detailed analysis of the data is in progress.

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