PDS_VERSION_ID                     = PDS3                                     
RECORD_TYPE                        = STREAM                                   
                                                                              
OBJECT                             = TEXT                                     
   PUBLICATION_DATE                = 2008-03-19  /* Label Generated */        
   NOTE                            = "Description of the contents of the      
        document directory."                                                  
END_OBJECT                         = TEXT                                     
END                                                                           
                                                                              
"document" Directory Contents                                                 
                                                                              
The document directory contains documentation files, where available, for the 
data set in this volume.  All document files will have an accompanying label  
file to describe content and structure.  Label files have the same name as the
main document file, with an extension of ".lbl".                              
                                                                              
                                                                              
docinfo.txt       - This file.                                                
                                                                              
ads.asc -  The file sent to Abstract Data Service (ADS).                      
                                                                              
ads.lbl -  The label for ads.asc.                                             
                                                                              
capture_dates.asc - This file contains the date of capture for all images     
        and text files downloaded from the web for documentation in the       
        SOHO comet PDS archive.                                               
                                                                              
capture_dates.lbl - The label file for the capture_dates_asc file.            
                                                                              
comet_elements.asc - This file contains the orbital elements, group           
        membership (if any), and discoverer for all comets in this dataset.   
                                                                              
comet_elements.lbl - The label file for the comet_elements.asc file.          
                                                                              
calib_docs/ - This directory contains the information about the               
        calibration processes for LASCO instrument.                           
                                                                              
calib_docs/exp_fac/ - This directory contains PNG files which provide         
        monthly exposure time correction factors and corresponding standard   
        deviations plots for the level-0 C2 (normal, orange, clear) or C3     
        (normal, clear, clear) images. Further explanation of these files     
        can be found in expfac.asc.                                           
                                                                              
calib_docs/filter/ - This directory contains plots for the spectral           
        transmittance in PNG format. Further explanation of these files can   
        be found in filter.asc.                                               
                                                                              
calib_docs/quantum_eff/ - This directory contains the plots for the quantum   
        efficiency for each of the detectors (C2 and C3) in PDF format.       
        Further explanation of these files can be found in qe.asc.            
                                                                              
calib_docs/vignetting/ - This directory contains vign.asc which describes     
        the vignetting process that was applied to the data images.           
                                                                              
inst_docs/ - This directory contains information for the LASCO                
        instrument and its detectors.                                         
                                                                              
inst_docs/handbook/ - This directory contains an ASCII text version of the    
        LASCO HANDBOOK FOR SCIENTIFIC INVESTIGATORS. It consists of           
        handbook.asc and 17 graphics files from the handbook.                 
                                                                              
inst_docs/occulter_center/ - This directory contains plots of the occulter    
        center in x and y pixel position for C2 and C3. An overview of these  
        files can be found in occulter_center.asc.                            
                                                                              
inst_docs/temperature/ - This directory contains long term (mission) plots of 
        the C1, C2, C3, and EIT temperatures and currents. Further information
        can be found in temps_plots.asc.                                      
                                                                              
spacecraft_info/  - This directory contains information about various         
        aspects of the SOHO spacecraft. These include the spacecraft time,    
        ground time, solar rotation axis, and clock resets and reboots.       
        See clock_resets_reboots.asc and time_and_rotation_axis.asc.          
                                                                              
sun_position/ - This directory contains PNG plots of the solar roll           
        angle and of the pointing and an ASCII file of roll angles in         
        10 minute intervals (sc_body_axis_avg_roll.asc). A more extensive     
        overview can be found in sunpos.asc.                                  
                                                                              
telemetry_stats/  - This directory contains PNG plots of the monthly          
        telemetry statistics for each telescope on SOHO/LASCO. Further        
        information can be found in tm_stat.asc.