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Mariner 10 Photos of Venus on 70mm Film


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

Time span: 1974-02-05 to 1974-02-10


This data set is the photography of Venus for the Mariner 10 mission on 70-mm black-and-white film. Each frame contains a data block of supporting data to the right of the photo and gray scales at the bottom for original and for stretched (albedo) versions. The data block contains the following information: first row--MTCF (mission test computer facility) identifier and mission identifier; second row--day no., h, m, s and ms and flight data system (FDS) count (similar to the Mariner 9 data automation set (DAS no.); third row--spacecraft data transmission mode, imaging system mode, bit rate (117 = 117.6 kbps, 22 = 22.05 kbps, 7 = 7.35 kbps) and editing mode (ss = skip-slide, cs = center strip); fourth row --first in-synch line/last in-synch line, no. of good lines/no. of bad lines/no. of missing lines, total = 700; fifth row--bit error (blank in system test phase) and no. of spikes (blank in system test phase); sixth row --camera designation, exposure time in s and ms, and filter position and type; seventh row--cathode beam status (off or on), camera flooding light status A and B (camera A and B on), A (camera A on, camera B off) B (camera B on, A off), off (both off), and calibration mode status (off or on); eighth row--filter step command (0, 1, 2, or error) and dark current (dc) status (off or on); ninth row--camera (A then camera B) temperature control status (low, high, both, or error); tenth-fourteenth rows --data nos. of 10 TVS housekeeping measurements; fifteenth-nineteenth rows--processing versions (raw, stretched (albedo), or AGC or high pass filtered (HPF) (maximum discrimination)), filter size in picture elements (blank for raw), type of stretch (none, manual auto es (end search) or auto cs (center search), input parameters for specified stretch, resulting end points of stretch used (equating input no. [0-255] with output level [0-63]), translation table identifier (tt0 [none] tt1, tt2, tt3), HPF transference factor (blank for other than high pass) giving percentage of HPF output used, blemishes removed (blank if not selected) used on HPF or AGC only, and radiance contouring type identifier (none, line [= linear}, log [= logarithmic]); twentieth (last) row --day, month, year of processing by MTCF, and 7000 series number. The two bottom gray scales show -- left - full range of gray scale;-- right,- stretched range. The original numbering system was a 7000-series. Several rolls were spliced together to form a larger roll. These larger rolls were designated by a 9000-series numbering system. The latter frame number is imprinted in large bold-faced type in the space between the gray scales (the roll is preceded by the 9000 number system). These two series numbers will be cross-referenced so that requests may be made by either number. The 7000-series number appears in the last row in the data block. These data are available in digital tape form from Susan La Voie, Mail Stop 168-514, Jet Propulsion Laboratory, Pasadena, CA.


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


  • 73-085A-01C

Additional Information



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



NameRoleOriginal AffiliationE-mail
Mr. Kenneth P. KlaasenData ProviderNASA Jet Propulsion
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