CalibrationTypes

<xs:simpleType name="CalibrationTypes">
  <xs:annotation>
    <xs:documentation>Used to identify the purpose of a <CalibrationObservation>, e.g. for shutter control.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="alignment"/>
    <xs:enumeration value="bias"/>
    <xs:enumeration value="centering"/>
    <xs:enumeration value="dark-current"/>
    <xs:enumeration value="extra-focal"/>
    <xs:enumeration value="flatfield"/>
    <xs:enumeration value="flux"/>
    <xs:enumeration value="focus"/>
    <xs:enumeration value="frequency"/>
    <xs:enumeration value="fringing"/>
    <xs:enumeration value="intra-focal"/>
    <xs:enumeration value="other"/>
    <xs:enumeration value="position"/>
    <xs:enumeration value="timing"/>
    <xs:enumeration value="tracking"/>
    <xs:enumeration value="wavelength"/>
  </xs:restriction>
</xs:simpleType>