PDS_VERSION_ID                     = PDS3                                     
RECORD_TYPE                        = "STREAM"                                 
LABEL_REVISION_NOTE                = "2007-02-23: Information loaded into OLAF
        by kevin walsh;                                                       
        2007-03-29: SBN:McLaughlin   Enhanced description                     
        2007-12-19: SBN:Feaga        Further enhanced description             
        2008-03-22: SBN:McLaughlin   Removed invalid degree symbols           
"                                                                             
                                                                              
OBJECT                             = INSTRUMENT_HOST                          
  INSTRUMENT_HOST_ID               = "OBS211T2"                               
  OBJECT                           = INSTRUMENT_HOST_INFORMATION              
    INSTRUMENT_HOST_NAME           = "NATIONAL ASTRONOMICAL                   
        OBSERVATORY-ENSENADA 1.5 M"                                           
    INSTRUMENT_HOST_TYPE           = "EARTH BASED"                            
    INSTRUMENT_HOST_DESC           = "                                        
                                                                              
                                                                              
  Instrument Host Overview                                                    
  ========================                                                    
    The Instituto de Astronomia at Ensenada, Mexico, operates the 1.5m,       
    f/13.5 Ritchey-Chretien reflector telescope at the Observatorio           
    Astronomico Nacional/San Pedro Martir facility located on the summit      
    of the San Pedro Martir Sierra on the Baja California peninsula of        
    Mexico.                                                                   
                                                                              
    The 1.5m telescope is located at:                                         
                                                                              
      Longitude  :   115.466667 degrees West  (-115 deg 28' 00'')             
      Latitude   :    31.045278 degrees North ( +31 deg 02' 43'')             
      Altitude   :  2790 meters                                               
                                                                              
    The telescope often suffers from significant astigmatism. The telescope   
    has an equatorial mount and can point to declinations between +59 deg 40' 
    and -40 deg and hour angles between +5 and -5 hours. If the telescope is  
    not perfectly balanced, it can have problems pointing at the northern and 
    southern extremes of declination.  The telescope has a reputation for     
    pointing inconsistently, sometimes badly and sometimes well. The best     
    that can be expected is about 3 arcmin over the whole sky, about          
    1 arcmin along the equator (e.g., moving between Landolt standard         
    fields), and a few arcsec over small distances, although often the        
    pointing is worse. Typical delivered image quality is 1.0 to 1.5 arcsec.  
                                                                              
    This information is provided at the Observatorio Astronomico              
    Nacional website:                                                         
                                                                              
      http://www.astrossp.unam.mx/indexspm.html                               
                                                                              
                                                                              
                                                                              
          GROUP                        = OBSERVATORY_PARAMETERS               
            OBSERVATORY_ID             = 'OBS211'                             
            NAME                       = 'NATIONAL ASTRONOMICAL               
    OBSERVATORY-ENSENADA'                                                     
            COUNTRY                    = 'MEXICO'                             
            ADDRESS                    = 'NATIONAL UNIVERSITY OF              
    MEXICO\N                                                                  
                                          APARTADO POSTAL 877,                
    ENSENADA (BC) 22860'                                                      
          END_GROUP                    = OBSERVATORY_PARAMETERS               
                                                                              
          GROUP                        = TELESCOPE_PARAMETERS                 
            TELESCOPE_ID               = 'T2'                                 
            NAME                       = '1.5 M'                              
            APERTURE                   = 1.5 <METERS>                         
            LONGITUDE                  =  115.466600 /* +115 27 59.76         
    */                                                                        
            LATITUDE                   =   31.577700 /* +31 34 39.7 */        
            ALTITUDE                   = 2800 <METERS>                        
            COORDINATE_SOURCE          = 'Astronomical'                       
          END_GROUP                    = TELESCOPE_PARAMETERS"                
                                                                              
  END_OBJECT                       = INSTRUMENT_HOST_INFORMATION              
                                                                              
  OBJECT                           = INSTRUMENT_HOST_REFERENCE_INFO           
    REFERENCE_KEY_ID               = "N/A"                                    
  END_OBJECT                       = INSTRUMENT_HOST_REFERENCE_INFO           
                                                                              
END_OBJECT                         = INSTRUMENT_HOST                          
END