NSSDCA ID: PSPG-00308
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
This data set contains Mariner 6 and 7 TV reduced data records. The records were originally on 7 track tapes and were copied onto CD-WO as part of the Science Digital Data Preservation Task (SDDPT). The original 7-bit data were padded to 8 bits by removing first (parity) bit and padding the resulting 6-bit characters to 8-bits by placing zeroes into the 2 highest order bits. The 7-track tape data was originally written in "SNAKED" format with attached EBCDIC VICAR labels in front of the data. The files on this CD are organized in one top-level directory with several subdirectories.
To display images originally archived on 7-track tapes use the VICAR program LABEL-CREATE, with inputs of NL = xxx (number of lines) and NS = xxx (number of samples). More information on these data is contained in the AAREADME.TXT and M69_INFO.TXT files on the CD.
The magnetic tapes in most cases, were at least 20-27 years old. Accompanying each tape on the disc, there is a log file which documents SDDPT processing history and copy errors. Each CD-WO has been formatted according to the ISO 9660 Interchange Standard so that a variety of computer systems may access the data. File attributes are specified by Extended Attribute Records which comprise the first 512 bytes of the file.
This data set was created at JPL as part of its Science Digital Data Preservation Task (SDDPT), and a copy was provided to NSSDC for safekeeping. Numerous SDDPT data sets are not readily usable, as they represent bit copies of old data tapes and do not contain user documentation. Persons interested in ordering these data should contact the NSSDC person listed for this data set. Freeware to view this particular data set is available at:
http://members.tripod.com/petermasek/mariner67.html
This is SDDPT data set code 69-030A-0019, volume ID M69_2001.
Questions and comments about this data collection can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Ms. Amy Hochstettler Culver | Data Provider | NASA Jet Propulsion Laboratory | adc@mip17.jpl.nasa.gov |
Ms. Susan K. LaVoie | General Contact | NASA Jet Propulsion Laboratory | sue.k.lavoie@jpl.nasa.gov |