Instrument Host Overview
  ========================
    Operational 1974+; from Yale Univ. Obs.
 
    GROUP                        = OBSERVATORY_PARAMETERS
      OBSERVATORY_ID             = 'OBS055'
      NAME                       = 'CERRO TOLOLO INTER-AMERICAN OBSERVATORY'
      COUNTRY                    = 'CHILE'
      ADDRESS                    = 'Casilla 603, La Serena'
    END_GROUP                    = OBSERVATORY_PARAMETERS
 
    GROUP                        = TELESCOPE_PARAMETERS
      TELESCOPE_ID               = 'T4'
      NAME                       = '1-M BOLLER & CHIVENS RITCHEY-CHRETIEN
    REFLECTOR'
      APERTURE                   = 1 
      LONGITUDE                  =  -70.814392 /* -70 48 51.81 */
      LATITUDE                   =  -30.165222 /* -30 09 54.8 */
      ALTITUDE                   = 2215 
      COORDINATE_SOURCE          = 'Astronomical'
    END_GROUP                    = TELESCOPE_PARAMETERS