NSSDCA ID: PSPA-00005
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
This data set consists of 8X10-in color negatives of various scenes on Mars on Mercator projection as provided by the US Geological Survey Image Processing Section. The photos show the color and relative albedo of Mars as closely as possible with Viking data. Variations in density of approximately 0.15 have been noted between frames, caused by inconsistencies in processing but the variations are not present in the final computer mosaics. The brightest areas on the brightest pictures have an albedo of about 0.25, and the darkest areas on the darkest pictures are of about albedo 0.09. The K in Picno is used to distinguish that it is a color photo, and the numerals correspond to the number of the green number of the set used to make the color composite. The pictures are accompanied by data blocks and color wedges below them. The data blocks give information on picture exposures and process, zenith angles, altitudes of spacecraft, sub-solar point angle, Mercator projection longitude and latitude, scale, spacecraft number, and orbit number. A clear film overlay for the 1:25,000,000 topographic map of Mars showing the location of each scene accompanies the data set.
Questions and comments about this data collection can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Mr. Raymond M. Batson | General Contact | US Geological Survey |