PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 2017-07-13                                            
  NOTE                = "Description of the DOCUMENT directory contents."     
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
The DOCUMENT directory contains copies of documents that are necessary or     
useful for users to understand the archive data set. These documents are      
organized in the subdirectories listed below.                                 
                                                                              
                                                                              
SCIENCE_PLAN                                                                  
The Dawn Science Plan document. This document provides a description of the   
planned Dawn observations throughout the mission from launch through Ceres.   
It is provided as a source of information on the intent of the observations   
made by the instrument teams at Vesta. Note that not all of the planned       
observations actually occurred due to a variety of instrument resets and      
spacecraft safings.                                                           
                                                                              
                                                                              
VESTA_COORDINATES                                                             
The Vesta Coordinate Systems Description document. This document describes    
various Vesta coordinate systems which have been used in the literature and   
in Dawn mapping products.                                                     
                                                                              
                                                                              
VIR_CALIBRATION                                                               
Dawn VIR Calibration document. This document describes the algorithms used to 
calibrate VIR raw (EDR) data in physical units (RDR, spectral radiance), in   
order to give to the final user a detailed view of the method used to remove  
instrumental effects on the data.