***** File VOLUME.TXT                                                         
                                                                              
                                                                              
    This CD-ROM contains 57 compressed image files for Comet Halley           
(LSPN3077-LSPN3209) as well as 9 calibration data (LSPN4165-LSPN4173)         
in compressed form that span the dates from May 08, 1986 to Apr 25,           
1987.   In each case, a Browse image has been provided for easy viewing.      
                                                                              
             ----------------------------------------                         
              image type      files      total size                           
             ----------------------------------------                         
             Comet Halley       57        299.8 Mbyte                         
             calibrations        9          2.5 Mbyte                         
             ----------------------------------------                         
                    total       66        302.3 Mbyte                         
             ----------------------------------------                         
             ----------------------------------------                         
                                                                              
     ------------------------------------------------------------             
                        UT date        UT time      Julian Date               
                        dd/mm/yy      day fract                               
     ------------------------------------------------------------             
     first image time   08/05/86       0.01632     2446558.516320             
                                                                              
      last image time   25/04/87       0.65451     2446911.154502             
     ------------------------------------------------------------             
     ------------------------------------------------------------             
                                                                              
In addition, the data received but not digitized in the corresponding         
catalog range (LSPN3077 to LSPN3210) are included as entries in the           
NETLARGE.IDX table in the INDEX directory.   These data which were taken      
in the time span May 08, 1986 to Apr 25, 1987 are archived by "dataless       
headers" from which the information in NETLARGE.IDX is collected.