PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 2011-09-15                                            
  NOTE                = "Description of the CATALOG directory contents        
                         for the NS uncalibrated data archive volume."        
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
This subdirectory contains the catalog object files for the entire volume.    
The following files are included in the catalog subdirectory.                 
                                                                              
CATINFO.TXT: Description of the contents of this directory (this file).       
                                                                              
DATASET.CAT: Describes the general content of the data set and includes       
information about the duration of the mission and the person or group         
responsible for producing the data.                                           
                                                                              
NS_INST.CAT: Describes physical attributes of the NS instrument and provides  
relevant references to published literature.                                  
                                                                              
INSTRUMENT_HOST.CAT: Describes the MESSENGER spacecraft.                      
                                                                              
MISSION.CAT: Describes the scientific goals and objectives of the MESSENGER   
program.                                                                      
                                                                              
PERSON.CAT: Lists and provides contact information for the people involved    
with the GRNS instrument on the MESSENGER mission.                            
                                                                              
REF.CAT: Provides references (reference objects) to scientific papers and     
other publications of interest to those using the data, both for NS and the   
mission as a whole.