PDS_VERSION_ID       = PDS3                                                   
RECORD_TYPE          = STREAM                                                 
OBJECT               = TEXT                                                   
  NOTE               = "AAREADME file for SL9 Data Set Collection Volume"     
  PUBLICATION_DATE   = 2001-03-01                                             
END_OBJECT           = TEXT                                                   
END                                                                           
                                                                              
***** File AAREADME.TXT                                                       
                                                                              
Two groups of data (HIGH and LOW dispersion) are included in this volume.  The
LWP, and SWP data are for comet Shoemaker-Levy 9 and Jupiter.   The data      
were collected from IUE  archive  at STScI.   A FITS to PDS translator (F2P)  
has been used to create the detached PDS labels.    The data were checked     
by manipulating the data with IDL routines created at the Small Bodies Node.  
In the DOCUMENT directory are explanatory text files as well as digitized     
versions (1&2) of the manuals in TEX or ASCII text with figures as JPG        
files. All document files and most labels contain an 80-byte fixed length     
record, with a carriage return (ASCII 13) and line feed (ASCII 10) as the     
79th and 80th byte respectively.   All the tabular files in the INDEX and     
DOCUMENT directory are formatted according to PDS standards.   It should be   
noted that the index tables are formatted so that they may be read directly   
into many database management systems.   All fields are separated by commas,  
and character fields are inclosed in double quotes (").                       
                                                                              
An outline of the CD-ROM is shown in the table below:                         
                                                                              
AAREADME.TXT                      Short introduction to CDROM contents        
VOLDESC.CAT                       Description of files on volume              
/CATALOG/*.CAT                    Mission,host,instrument,data, collection,ref
****************************************************************************  
 *DS - abbreviation for data set, used in filename for catalog                
 *HOST - spacecraft or observatory (institution) that supports a mission      
 *MSN - abbreviation for mission, used in filename for catalog                
 REF - reference list as a catalog file                                       
*************************************************************************     
/DOCUMENT/*.ASC,*.JPG,*.TEX,.TAB  Manuals and pointing information            
         /OBSERVATION_LOG/*.ASC,*.JPG Digitized log pages for data            
         /IUECAL/*.ASC,*.FIT      Sensitivity calibration for archive         
/INDEX/*.TAB                      Indexes by experiment or volume             
/DATA/HIGH/INS/*.FIT  High dispersion data                                    
/DATA/LOW/INS/*.FIT   Low dispersion data                                     
                                                                              
[INSTRUMENT   = LWP,SWP  FILE (Low) = MXLO,SILO   File (High) = MXHI, SIHI]   
                                                                              
There are two data forms: resampled images, and spectra (binary). After       
data reached the Small Bodies Node, some file names were changed to meet ISO  
standards. The original files came in FITS format in the form filename.mxlo   
or filename.silo (sihi, mxhi).   New filenames were converted to end in the   
extension "FIT" (FITS became FIT), and for SILO (SIHI, MXLO, MXHI) the first  
characters of the old extension were used to replace the second two characters
of the fielname; thus SILO (MXLO, SIHI, MXHI) files could end in "FIT" and    
still be unique.  For example for SWP (and holds for LWP as well):            
                                                                              
       SWP12345.SILO   ->       SSI12345.FIT                                  
       SWP12345.MXLO   ->       SMX12345.FIT                                  
                                                                              
Small Bodies Node                                                             
Department of Astronomy, University of Maryland                               
College Park, MD 20742-2421                                                   
e-mail to pdssbn.astro.umd.edu; URL-http://pdssbn.astro.umd.edu