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NASA Space Science Data Coordinated Archive Header

Mars Imaging EDRs on Magnetic Tape


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

Time span: 1971-11-14 to 1972-10-22


This data set consists of the Experiment Data Records (EDRs) for the approximately 7300 images obtained by the Mariner 9 TV experiment. The EDRs consist of unprocessed (raw) instrument data in VICAR format. Each image file consists of 22 blocks containing 31,944 bytes per block. Each block is composed of 33 logical records of 968 bytes each. The first logical record of the first block contains a label. The labels are followed by 700 logical records (one per image line) containing pixel and engineering data. Details of the data set are provided by Martin et al., ``Planetary Image Conversion Task: Final Report,'' JPL Publication 85-50, 1985, which is available at NSSDC. This publication includes the only catalog currently available for the data set. The catalog lists images by DAS time, a spacecraft clock count, against tape/file position. For this reason, it is necessary to be able to identify the DAS times of interest before placing an order. The data are available on 1600 or 6250 bpi magnetic tape.

Alternate Names

  • Mars Imaging Data
  • Mariner 9 TV Experimental Data Records


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


  • 71-051A-04a

Additional Information



Questions and comments about this data collection can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
Ms. Ellen WachnerData ProviderNASA Jet Propulsion Laboratory

Selected References

  • Martin, M. D., et al., Planetary image conversion task, JPL, Calif. Inst. Technol., 85-50, Pasadena, CA, Sept. 1985.
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