PDS_VERSION_ID      = PDS3                                                    
LABEL_REVISION_NOTE = "                                                       
  24 Apr 2004   A.C.Raugh   Creation                                          
  "                                                                           
                                                                              
OBJECT     = INSTRUMENT_HOST                                                  
  INSTRUMENT_HOST_ID = "CAO35M"                                               
                                                                              
  OBJECT     = INSTRUMENT_HOST_INFORMATION                                    
    INSTRUMENT_HOST_NAME = "CALAR ALTO OBSERVATORY 3.5M TELESCOPE"            
    INSTRUMENT_HOST_TYPE = "EARTH BASED"                                      
    INSTRUMENT_HOST_DESC = "                                                  
                                                                              
      Overview                                                                
      ========                                                                
      The Calar Alto Observatory and the German-Spanish                       
      Astronomical Center are located in the Sierra de                        
      Los Filabres in Andalucia, southern Spain.  The                         
      Max-Planck-Institute fur Aeronomie, Heidelberg,                         
      operates three telescopes at this facility.                             
                                                                              
      Additional information about the observatory and                        
      the telescopes and instruments available to                             
      observers may be found on the observatory home                          
      page at this URL:                                                       
                                                                              
        http://www.mpia-hd.mpg.de/Public/CAHA/                                
                                                                              
      The summary information provided here was obtained                      
      from the above site.                                                    
                                                                              
                                                                              
      Observatory Coordinates                                                 
      =======================                                                 
                                                                              
      Longitude: 2.54625 degrees West                                         
       Latitude: 37.2236 degrees North                                        
       Altitude: 2168 meters                                                  
                                                                              
      Telescope Overview                                                      
      ==================                                                      
      The 3.5 meter telescope at Calar Alto was commissioned in               
      the summer of 1984.  It a prime system used with two or three           
      correctors, a Ritchey-Chretien system and an IR system                  
                                                                              
      Telescope Parameters:                                                   
                                                                              
         Aperture            3500 mm                                          
         Hour Angle range    -7 to +7                                         
                                                                              
                              Prime       RC System   Coude System            
                         2 lens   3 lens                                      
                         ---------------  ---------   ------------            
      Focal length (mm)  22195    13761     35000        157500               
      f/ratio            1/3.48   1/3.93    1/10.0       1/45                 
      FOV (mm)           100      243       300          109                  
      Scale (''/mm)      16.9     15.0      5.89         7.6                  
      "                                                                       
                                                                              
  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