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Digitized Scans of the Far-Ultraviolet Camera/Spectroscope Frames


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

Time span: 1972-04-21 to 1972-04-23


This data collection consists of the digitized results of microdensitometering the 209 mission frames from the Apollo 16 far-UV camera experiment of Carruthers and Page. These scans were all performed on the dicomed model 57 microdensitometer using a spot size of 38 microns and a scan interval of 32 microns. There are a total of 476 scans. There are 288 scans of the 190 mission picture frames, 58 scans of the 19 mission calibration-frames, and 130 scans of the special frames used for calibration control during the scanning process.

The data were written in binary and were packed at 8 bit/byte. Each tape is multifiled and has no information other than the direct scanning data. The data are blocked out in the following manner. First, the scan of one complete frame is contained in one file. Second, each record within a file represents one scan line of data recorded left to right. (The full scan of one mission frame is equivalent to 1024 records). Third, each byte (8 bits) within a record represents the light transmittance value recorded by the scanner for one increment of the scan interval. The 8-bit a/d digitization allows for a possible range from 0 to 255 in the recorded transmittance values along the scan line. The maximum number of elements (bytes) per scan line for a mission frame is 1024. (NB: To locate the scan of particular frames on these tapes and to know how that scan was performed requires used of the NSSDC data collection ASUV-00061. Data collection ASUV-00061 will be sent automatically to those requesting ASUV-00017.) Update 12/06/21, ASUV-00061 has been digitized. The digitized ID is ASUV-00074.

Alternate Names

  • Digitized Images


  • Planetary Science: Atmospheres
  • Astronomy: Ultraviolet


  • 72-031C-10B

Additional Information



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



NameRoleOriginal AffiliationE-mail
Dr. George R. CarruthersGeneral ContactUS Naval Research
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