Infrared Imaging of Venus: 8-14 Micrometers
Abstract
High spatial resolution 8-14 μm images of Venus were obtained on March 6, 1974. The planet was at a phase angle of 112° with the morning terminator in view. Our images confirm the existence of a previously mapped flux anomaly near the south pole and show evidence of other infrared features, presumably transient in nature. Flux differences of 2-7% were measured, corresponding to brightnes temperature variations of roughly 1-3°K. The images also confirm the difference between polar and equatorial limb darkening. Finally, we present evidence for a night-day asymmetry in the flux, with the brightness temperature greater by about 2°K on the sunlit side.
- Publication:
-
Icarus
- Pub Date:
- February 1976
- DOI:
- 10.1016/0019-1035(76)90002-6
- Bibcode:
- 1976Icar...27..191D
- Keywords:
-
- Infrared Astronomy;
- Infrared Imagery;
- Planetary Radiation;
- Radiant Flux Density;
- Venus (Planet);
- Brightness Temperature;
- Data Processing;
- Limb Darkening;
- Planetary Surfaces