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IPL Albedo Photos on Black/White Positive 70-mm Film


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1971-11-13 to 1972-10-27


These photographs are albedo versions of the original 70-mm frames processed by the IPL laboratory. The albedo versions have been enhanced by stretching out albedos for contrast, thus encompassing the entire brightness range of the exposed regions. A data block included on the frame gives the following data: mission designation, date, time, DAS number, picture number, exposure time (ms), filter used, altitude of spacecraft, view zenith angle, longitude and latitude of center of photo, approximate horizontal distance (width) on surface, vertical distance (height) on surface, solar zenith angle, frame corner coordinates, correction for residual image, conversion factor for luminosity (to fL), and stretch factor. This version has had first-order correction for error and orthographic correction. The quality of the frames is generally good. Very little detail is found on the frames taken early in the mission (November-December 1971) owing to the planet-wide dust storm in progress at that time.

Alternate Names

  • IPL Orthographic Contrast Enhance


  • Planetary Science: Atmospheres
  • Planetary Science: Geology and Geophysics


  • 71-051A-04D

Additional Information



Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Mr. Virgil B. CombsGeneral ContactNASA Jet Propulsion Laboratory
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