PDS_VERSION_ID        = PDS3                                                  
                                                                              
RECORD_TYPE           = FIXED_LENGTH                                          
RECORD_BYTES          = 80                                                    
                                                                              
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 1995-07-20                                            
  NOTE                = "Description of contents in the CATALOG               
                         subdirectory."                                       
                                                                              
END_OBJECT            = TEXT                                                  
                                                                              
END                                                                           
                                                                              
                                                                              
                                                                              
           Content Description of the CATALOG Subdirectory                    
                                                                              
                                                                              
                                                                              
     The CATALOG subdirectory on this CD-ROM volume contains the completed    
catalog objects associated with the Mariner 9 and Viking Orbiter cloud        
catalog data set.  These objects contain high-level descriptions of the data  
set.  Each catalog object is in ASCII, with a maximum of 78 characters per    
line.  Each line is delimited with a carriage-return (ASCII 13) line-feed     
(ASCII 10) pair.                                                              
                                                                              
Following is a list of the catalog objects contained in this subdirectory and 
a description of each:                                                        
                                                                              
MR9MISS.CAT                                                                   
      A description of the Mariner 9 mission.                                 
                                                                              
VOMISS.CAT                                                                    
      A description of the Viking Orbiter missions.                           
                                                                              
MR9HOST.CAT                                                                   
      A description of the Mariner 9 spacecraft.                              
                                                                              
VO1HOST.CAT                                                                   
VO2HOST.CAT                                                                   
      Descriptions of the Viking Orbiter 1 and 2 spacecraft.                  
                                                                              
MR9INST.CAT                                                                   
      A description of the MR9 ISS instrument.                                
                                                                              
VO1AINST.CAT                                                                  
VO1BINST.CAT                                                                  
VO2AINST.CAT                                                                  
VO2BINST.CAT                                                                  
     Descriptions of the VO1 and VO2 ISS instruments (Cameras A and B).       
                                                                              
DATASET.CAT                                                                   
     A description of the derived IRTM data sets contained in this archival   
volume.  Included are information on the derivation of the data set,          
brief discussions of the data quality, and a list of relevant references.     
                                                                              
PERS.CAT                                                                      
     A listing of the people involved in the production of this data set      
and CD-ROM.                                                                   
                                                                              
REF.CAT                                                                       
     A listing of pertinent references.