HEADER /TELESCOPE

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HEADER /TELESCOPE

            [VECTOR\]HEADER GildasFile|HeaderVariable /TELESCOPE [+-]Tel1

        This  option  adds  (leading +) or removes (leading -) one or more tele-
        scope from the telescope section. If the + or - character is omitted,  +
        is assumed.

        For example:
          SIC> HEADER myfile.gdf /TELESCOPE 30M
        adds the 30M to the telescope section.
          SIC> HEADER myfile.gdf /TELESCOPE -ALMA +ACA
        removes the ALMA telescope and adds ACA.

        It  is not an error to add a telescope already present, and it is not an
        error to remove a telescope already absent.