***** File OBSVINFO.TXT                                                       
                                                                              
     This directory contains information about the observatories and          
telescopes which contributed data to the IHW Archive.  The principal file to  
which the Archive user may wish to refer is OBSCODES.TXT; this document       
contains quite specific information about each of the contributing            
observatories.  Included in OBSCODES.TXT are tables listing SYSTEM Codes,     
Observatory names, Telescope/Instrument descriptions, and geographic          
locations.  The SYSTEM Codes are particularly important because they allow the
user to search various of the indices in this Archive for a particular        
observatory/telescope's data.                                                 
                                                                              
     The files called COUNTRY.TXT, IAU.TXT, and NOIAU.TXT are supporting      
documents which contain information which was important in the assignment of  
SYSTEM Codes by the IHW.  However, the actual SYSTEM Codes, as well as the set
of procedures the IHW used in assigning them, are contained only in the       
OBSCODES.TXT file.