This file describes the materials requested by, processed for, and
provided to Prof. R. Greeley as part of the Mars Global Surveyor (MGS)
Mars Orbiter Camera (MOC) Guest Observer Program.  Prof. Greeley
requested repeat coverage of seven locations identified by MOC image
ID.  Of the 7 sites, four have already been re-imaged; the
observations are included in this distribution.  The remaining 3
locations have been entered into the MOC target data base and will be
re-imaged should the MGS spacecraft fly over these targets during the
extended mission.  The following table summarizes the request and the
images that fulfill it.

First Image    Second Image
  
  M02-02711   E03-01039* (Proctor dunes)
  FHA-01006   E02-00691* (Rabe dunes)
  SP2-53807   M21-00034* (Chasma Boreale dunes)
  AB1-03001   M04-00570* (dunes/ripples in crater)

  M12-01884   Placed in Target Database
  M04-00325   Placed in Target Database
  M01-00326   Placed in Target Database

  * Image included in this release

The images included in this release are in PDS-IMQ compressed format.
To create PDS uncompressed image (IMG) format, use the program
'readmoc' which is provided on the PDS archive CD-ROMs in the software
directory.  That directory includes both a SunOS (and Solaris) and
Windows98 (DOS) version of the decompression program.  This release
also includes a text file, 'ancillary.tab' that provides ancillary
image information in PDS format.

NOTE: Some of these data have not been validated for delivery to the
PDS.  They are made available as part of the MGS Guest Observer
Program.
