PDS_VERSION_ID       = PDS3                                                   
RECORD_TYPE          = STREAM                                                 
OBJECT               = TEXT                                                   
  NOTE               = "AAREADME file for IHW Addenda  Collection Volume"     
  PUBLICATION_DATE   = 1999-11-26                                             
END_OBJECT           = TEXT                                                   
END                                                                           
                                                                              
***** File AAREADME.TXT                                                       
                                                                              
This data set collection contains addenda data for the International Halley   
Watch Archive which have been been collected, archived, processed,            
and prepared for this prototype CD-WO by several teams associated with        
the ground-based survey   projects and coordinated by the PDS Small Bodies    
Node. This data set collection gathers additional material for the study of   
Comets Giacobini-Zinner (GZ) and Halley                                       
                                                                              
Currently two (of possible 6) groups of data are included on this volume.     
These are:                                                                    
                                                                              
        Outburst Images -       Collected images (Cerro Tololo Interamerican  
                                Obs and University of Hawaii Mauna Kea Obs);  
                                images oriented with North up and East to left
The data files were submitted in both the PDS and FITS form.   In the latter  
case, a FITS to PDS translator program (F2P) has been used to create the      
detached PDS labels for each corresponding FITS file.    The data were checked
by manipulating the data with IDL routines developed at the Small Bodies Node 
Documents give explanatory text, user manuals (Postscript or Acrobat or ASCII 
with figures), and articles (digitized after permission granted by authors    
and IEEE. 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.                  
                                                                              
An outline of the CD-ROM is shown in the table below:                         
/CATALOG/*.CAT                    Mission, host, instrument, data set, & ref  
/DOCUMENT/                        Explanatory documentation, errors, figures  
/DOCUMENT/MANUALS                 User manuals (and figures) in various forms 
/INDEX/*.TAB                      Indexes by experiment, mission, volume      
/CTIO/YYYYMMDD/                   Outburst data on 2 volumes separated by date
/CTIO/YYYYMMDD/CAL                Calibration data for outburst images        
/CTIO/YYYYMMDD/SUM                Composite images, s-star, t-total shift     
/UH/YYYYMMDD/                     Outburst data on 2 volumes separated by date
/UH/YYYYMMDD/CAL                  Calibration data for outburst images        
/UH/YYYYMMDD/SUM                  Composite images, s-star, t-total shift     
                                                                              
                                                                              
Small Bodies Node, Planetary Data System                                      
Department of Astronomy, University of Maryland                               
College Park, MD 20742-2421                                                   
pdssbn.astro.umd.edu