***** File VOLUME.TXT                                                         
                                                                              
                                                                              
    This CD-ROM contains 73 compressed image files for Comet Halley           
(LSPN1255-LSPN1366) as well as 13 calibration data (LSPN4075-LSPN4087)        
in compressed form that span the dates from March 07 to March 11, 1986.       
In each case, a Browse image has been provided for easy viewing.              
                                                                              
             ----------------------------------------                         
              image type      files      total size                           
             ----------------------------------------                         
             Comet Halley       73        620.6 Mbyte                         
             calibrations       13          3.5 Mbyte                         
             ----------------------------------------                         
                    total       86        624.1 Mbyte                         
             ----------------------------------------                         
             ----------------------------------------                         
                                                                              
     ------------------------------------------------------------             
                        UT date        UT time      Julian Date               
                        dd/mm/yy      day fract                               
     ------------------------------------------------------------             
     first image time   07/03/86       0.36319     2446496.863195             
                                                                              
      last image time   11/03/86       0.82273     2446501.322732             
     ------------------------------------------------------------             
     ------------------------------------------------------------             
                                                                              
In addition, the data received but not digitized in the corresponding         
catalog range (LSPN1252 to LSPN1366) are included as entries in the           
NETLARGE.IDX table in the INDEX directory.   These data which were taken      
in the time span MAR 03, 1986 to Mar 11, 1986 are archived by "dataless       
headers" from which the information in NETLARGE.IDX is collected.