***** File VOLUME.TXT                                                         
                                                                              
                                                                              
    This CD-ROM contains 58 compressed image files for Comet Halley           
(LSPN2446-LSPN2589) as well as 3 calibration images (LSPN4147-4149)           
in compressed form that span the dates from Apr 12 to Apr 15, 1986.           
In each case, a Browse image has been provided for easy viewing.              
                                                                              
             ----------------------------------------                         
              image type      files      total size                           
             ----------------------------------------                         
             Comet Halley       58        605.4 Mbyte                         
             calibrations        3           .9 Mbyte                         
             ----------------------------------------                         
                    total       61        606.3 Mbyte                         
             ----------------------------------------                         
             ----------------------------------------                         
                                                                              
     ------------------------------------------------------------             
                        UT date        UT time      Julian Date               
                        dd/mm/yy      day fract                               
     ------------------------------------------------------------             
     first image time   12/04/86       0.00521     2446532.505208             
                                                                              
      last image time   15/04/86       0.15903     2446535.659028             
     ------------------------------------------------------------             
     ------------------------------------------------------------             
                                                                              
In addition, the data received but not digitized in the corresponding         
catalog range (LSPN2445 - LSPN2589) are included as entries in the            
NETLARGE.IDX table in the INDEX directory.   These data which were taken      
in the time span Apr 12, 1986 to Apr 15, 1986, are archived by "dataless      
headers" from which the information in NETLARGE.IDX is collected.