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LaRC Hand-Assembled Regenerated Frames


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

Time span: 1966-11-18 to 1966-11-25


This data set, which is a complete set of the usable Lunar Orbiter 2 photography, consists of 823 first generation negative 20- by 24-in. film sheets. NASA's Langley Research Center prepared these enhanced photographs from original station video tapes by electronically preprocessing the video signal prior to input to the Ground Reconstruction Equipment (GRE). Two enhancement procedures were used. One procedure involved varying the parameters of gain function, signal gain, and signal offset to optimize detail and contrast in the photographic data. The other involved the use of an electronic mask to reduce the undesirable density gradients across the scan and framelet. Both procedures required point-by-point exposure adjustments. The enhanced photographs generated from the GRE were 35-mm positive transparencies. The positives were assembled into a 20- by 24-in. format, and contact negatives were made. One complete medium-resolution frame is contained on one sheet whereas three sheets are required for one high-resolution frame. The photographs were controlled for surface detail and are not recommended for photometric studies.

Alternate Names

  • LaRC Pix


  • Planetary Science: Geology and Geophysics


  • 66-100A-01C

Additional Information



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



NameRoleOriginal AffiliationE-mail
Mr. Isidore G. RecantGeneral ContactNASA Langley Research Center
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