PDS_VERSION_ID         = PDS3                                                 
RECORD_TYPE            = STREAM                                               
OBJECT                 = TEXT                                                 
  PUBLICATION_DATE     = 2000-09-14                                           
  INTERCHANGE_FORMAT   = ASCII                                                
  NOTE                 = "Description of the BROWSE directory                 
                          contents and browser information."                  
END_OBJECT             = TEXT                                                 
END                                                                           
                                                                              
                                                                              
                      BROWSE Directory Contents                               
                                                                              
The BROWSE directory has a structure identical to the data directories        
on this CD.   Each lowest level directory contains GIF formatted versions     
of the PDS archive images in the corresponding data directory; not            
every data file has a browse image.  Each collection of 1 GIF                 
image, which may contain up to 54 browse images,  has a PDS label.            
                                                                              
                                                                              
       Information About the NEAR Image Browser                               
                                                                              
The files in this directory are a series of GIF files that provide a          
simple method for browsing through the NEAR MSI image archive.                
The system is designed to be viewable by many WWW browsers.                   
                                                                              
The browse subdirectory has "Thumbnail" images of reduced size from           
the MSI science team image observation pages.                                 
                                                                              
The /BROWSE subdirectories contain pages of summary images.  There is one     
subdirectory for each day in the mission phase, is named <year>/<daynumber>   
(i.e. 2000/012 for January 12th).  Within the year-day subdirectories are GIF 
files, containing one page per file, of up to 54 "thumbnail," reduced-size,   
geometrically rectified images scaled in brightness from the minimum to       
maximum value in the image. This provides at a glance an overview of the      
images taken on that day.                                                     
                                                                              
The name of these files is used to group imaging activities within a day.     
For example,  pages of thumbnails for Optical Navigation Images are named     
*OpNav_pg1.gif,  star calibration named *StarCal_pg1.gif and planned imaging  
sequences (Seq*.gif).  The MSI planning spreadsheets, found in                
/DOCUMENT/INSTRUMENT list the planned activities in the day.