Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sval....2...29k&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 2, Feb. 1976, p. 75-81.) Soviet Astronomy Letters, vol. 2, Jan.-Feb. 1976, p. 29-32. Tr
Astronomy and Astrophysics
Astronomy
1
Astronomical Photometry, Brightness Temperature, Infrared Radiometers, Satellite-Borne Instruments, Venera Satellites, Venus Atmosphere, Correlation, Diurnal Variations, Energy Spectra, Limb Darkening, Telephotometry, Ultraviolet Photometry, Venus Clouds
Scientific paper
The paper reports on some radiometric and photometric measurements carried out by the Venera-9 and Venera-10 spacecraft orbiting Venus. The working bands are the 8-13 and 18-28 micron bands, with the observable IR radiation being formed in the upper cloud layers. The photometer-polarimeter works in nine spectral bands from 3300 to 8000 A. Brightness and brightness temperature curves in the IR and UV ranges for a 50-minute period of an orbit are shown. The IR brightness curve shows the familiar limb darkening effect, and it is unsymmetric on both sides of the maximal zenith distance cosine value, the nighttime values being greater than the daytime ones. This can be attributed to a lowering of the upper cloud boundary at night, or to the fact that the normal temperatures are close, but a different limb darkening law holds for day and night. Brightness temperature ranges from 227 to 231.5 K.
No associations
LandOfFree
Infrared radiometry and photometry with Venera 9 and 10 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Infrared radiometry and photometry with Venera 9 and 10, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared radiometry and photometry with Venera 9 and 10 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1299311