PDS_VERSION_ID                  = PDS3                                        
RECORD_TYPE                     = FIXED_LENGTH                                
RECORD_BYTES                    = 80                                          
INSTRUMENT_HOST_ID              = HST                                         
TARGET_NAME                     = "46P/WIRTANEN (1948 A1)"                    
OBJECT                          = TEXT                                        
  PUBLICATION_DATE              = UNK                                         
  NOTE                          = "ROSETTA SUPPLEMENTARY ARCHIVE"             
END_OBJECT                      = TEXT                                        
END                                                                           
                                                                              
                                                                              
ROSETTA SUPPLEMENTARY ARCHIVE HST IMAGE  DATA                                 
                                                                              
                                                                              
1. Introduction                                                               
                                                                              
                                                                              
      The Hubble Space Telescope (HST) was the first and flagship mission of  
      NASA's Great Observatories program. Designed to complement the          
      wavelength capabilities of the other spacecraft in the program (CGRO,   
      AXAF, and SIRTF), HST was a 2.4 m, f/24 Ritchey-Chretien telescope      
      capable of performing observations in the visible, near-ultraviolet,    
      and near-infrared (1150 A to 1 mm).                                     
                                                                              
      The mission was troubled soon after launch by the discovery that the    
      primary mirror was spherically aberrated [sic]. In addition, problems   
      with the solar panels flexing as the spacecraft passed from the Earth's 
      shadow into sunlight caused problems with the pointing stability. Steps 
      were taken to correct these problems, including replacement of the      
      solar panels, replacement of the Wide Field and Planetary Camera with   
      a second-generation version with built-in corrective optics, and        
      replacement of the High-Speed Photometer with COSTAR (Corrective        
      Optics Space Telescope Axial Replacement) to correct the aberration     
      for the remaining instruments, such as the Faint Object Spectrograph."  
                                                                              
      To support the ESA/Rosetta mission, the HST was used to observe comet   
      Wirtanen to determine physical parameters of the object and plan out    
      US led instrument deign for that mission.   To this end, data has been  
      gathered from the HST archives as a representative sample.  The complete
      data files are available through MAST at HST (http://archive.stsci.edu).
                                                                              
                                                                              
                                                                              
2. File formats                                                               
                                                                              
  Each label file was created with the fits2pds (f2p) tool provided by the    
PDS Small Bodies Node. The name convention used is:                           
                                                                              
         AXXXNNNNT.BnF .LBL                                                   
                                                                              
with A indicating the instrument ( in our cases, only U=WFPC2, Y = FOS)       
where XXX is a unique three character ID starting with a number (3)           
NNNN is an observation_id and T indicates the transmission was tape recorded  
To follow PDS standards the "." after the T has been represented by an        
"_"; follwing that change, B indicates if the data is "raw" or calibrated     
(D, C respectively) with the n value inditing a sequence of files.  The       
trailing F shows FITS data. These label files point to the corresponding      
FITS files.                                                                   
                                                                              
3. Volume contents                                                            
                                                                              
  The files on this volume are organized in one top-level directory with      
several subdirectories. The following table shows the structure and content   
of these directories. Int he table, directory names are enclosed in square    
brackets ([]), upper-case letters indicate an actual directory or file name,  
and lower-case letters indicate the general form of a set of directory or     
file names.                                                                   
                                                                              
FILE                                          CONTENTS                        
                                                                              
Top-level directory                                                           
|                                                                             
|- AAREADME.TXT                                   The file you are reading    
|                                                                             
|- [CATALOG]                                   A directory containing         
|      |                                   information                        
|      |                                        about the EFOSC2 dataset.     
|      |                                                                      
|      |- CATINFO.TXT                           Description of files in the   
|      |                                        CATALOG directory.            
|      |                                                                      
|      |- MISSION.CAT                           Mission catalog object.       
|      |                                                                      
|      |- INSTHOST.CAT                            Instrument host catalog     
|      |                                        object.                       
|      |                                                                      
|      |- INST.CAT                              Instrument catalog object.    
|      |                                                                      
|      |- PERSON.CAT                            Person catalog object.        
|      |                                                                      
|      |- REF.CAT                               Reference catalog object.     
|                                                                             
|- [DATA]                                                                     
|     |                                                                       
|     |- AXXXNNNNT_BnF.LBL                     The PDS detached label         
|     |                                                                       
|     |- AXXXNNNNT_BnF.FIT                      UXXXNNNNT_DnF/YXXXNNNNT_CnF   
|                                               for the corresponding         
|                                               FITS data file.               
|                                                                             
|- [DOCUMENT]                                                                 
|     |                                                                       
|     |- DOCINFO.TXT                            Description of files in the   
|     |                                         CATALOG directory.            
|     |                                                                       
|     |- CCCCC.TXT                              FOS or WFPC2 manual in ASCII  
|     |                                                                       
|     |                                                                       
|     |- CCCCC.PDF                              FOS or WFPC2 manual as        
|     |                                         PDF file                      
|     |                                                                       
|     |                                                                       
|     |- ROSETTA_PDF_FINAL.PDF                  Brief description of          
|                                               the ROSETTA                   
|                                               Mission                       
|                                                                             
|- [INDEX]                                                                    
      |                                                                       
      |- INDEX.LBL                            A PDS detached label            
      |                                         describing INDEX.TAB.         
      |                                                                       
      |- INDEX.TAB                              Tabular summary of data files.
      |                                                                       
      |- INDXINFO.TXT                             Description of files in the 
                                                INDEX directory.              
                                                                              
                                                                              
4. Contacts                                                                   
                                                                              
                                                                              
   Joe Zender                                                                 
                                                                              
         ESA Space Science Department                                         
         joe.zender@esa.int                                                   
                                                                              
   Jose Vazquez                                                               
                                                                              
         ESA Space Science Department                                         
         jose.vazquez@rssd.esa.int