***** File VOLUME.TXT                                                         
                                                                              
                                                                              
    This CD-ROM contains 73 compressed image files for Comet Halley           
(LSPN2711-LSPN12844) as well as 3 calibration images (LSPN4161-4163)          
in compressed form that span the dates from Apr 17 to Apr 29, 1986.           
In each case, a Browse image has been provided for easy viewing.              
                                                                              
             ----------------------------------------                         
              image type      files      total size                           
             ----------------------------------------                         
             Comet Halley       73        620.8 Mbyte                         
             calibrations        3          0.9 Mbyte                         
             ----------------------------------------                         
                    total       76        621.7 Mbyte                         
             ----------------------------------------                         
             ----------------------------------------                         
                                                                              
     ------------------------------------------------------------             
                        UT date        UT time      Julian Date               
                        dd/mm/yy      day fract                               
     ------------------------------------------------------------             
     first image time   17/04/86       0.18403     2446537.684028             
                                                                              
      last image time   29/04/86       0.98264     2446550.482639             
     ------------------------------------------------------------             
     ------------------------------------------------------------             
                                                                              
In addition, the data received but not digitized in the corresponding         
catalog range (LSPN2711 - LSPN2844) are included as entries in the            
NETLARGE.IDX table in the INDEX directory.   These data which were taken      
in the time span Apr 17, 1986 to Apr 29, 1986, are archived by "dataless      
headers" from which the information in NETLARGE.IDX is collected.