Enum ObservationDurationDescription

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      DATE_END
      The value field shall contain a character string that gives the date on which the observation ended.
      ELAPTIME
      The value field shall contain a floating point number giving the difference between the stop and start times of the observation in units of seconds.
      EXPOSURE
      The value field shall contain a floating point number giving the exposure time of the observation in units of seconds.
      EXPTIME
      The value field shall contain a floating point number giving the exposure time of the observation in units of seconds.
      LIVETIME
      The value field shall contain a floating point number giving the total integrated exposure time in units of seconds corrected for detector 'dead time' effects which reduce the net efficiency of the detector.
      ONTIME
      The value field shall contain a floating point number giving the total integrated exposure time of the observation in units of seconds.
      TELAPSE
      The value field shall contain a floating point number giving the difference between the stop and start times of the observation in units of seconds.
      TIME_END
      The value field shall contain a character string that gives the time at which the observation ended.
      TIME_OBS
      The value field shall contain a character string that gives the time at which the observation started.
    • Enum Constant Detail

      • DATE_END

        public static final ObservationDurationDescription DATE_END
        The value field shall contain a character string that gives the date on which the observation ended. This keyword has the same format, and is used in conjunction with, the standard DATA-OBS keyword that gives the starting date of the observation. These 2 keywords may give either the calendar date using the 'yyyy-mm-dd' format, or may give the full date and time using the 'yyyy-mm-ddThh:mm:ss.sss' format.
      • ELAPTIME

        public static final ObservationDurationDescription ELAPTIME
        The value field shall contain a floating point number giving the difference between the stop and start times of the observation in units of seconds. This keyword is synonymous with the TELAPSE keyword.
      • EXPOSURE

        public static final ObservationDurationDescription EXPOSURE
        The value field shall contain a floating point number giving the exposure time of the observation in units of seconds. The exact definition of 'exposure time' is mission dependent and may, for example, include corrections for shutter open and close duration, detector dead time, vignetting, or other effects. This keyword is synonymous with the EXPTIME keyword.
      • EXPTIME

        public static final ObservationDurationDescription EXPTIME
        The value field shall contain a floating point number giving the exposure time of the observation in units of seconds. The exact definition of 'exposure time' is mission dependent and may, for example, include corrections for shutter open and close duration, detector dead time, vignetting, or other effects. This keyword is synonymous with the EXPOSURE keyword.
      • LIVETIME

        public static final ObservationDurationDescription LIVETIME
        The value field shall contain a floating point number giving the total integrated exposure time in units of seconds corrected for detector 'dead time' effects which reduce the net efficiency of the detector. The ratio of LIVETIME/ONTIME gives the mean dead time correction during the observation, which lies in the range 0.0 to 1.0.
      • ONTIME

        public static final ObservationDurationDescription ONTIME
        The value field shall contain a floating point number giving the total integrated exposure time of the observation in units of seconds. ONTIME may be less than TELAPSE if there were intevals during the observation in which the target was not observed (e.g., the shutter was closed, or the detector power was turned off).
      • TELAPSE

        public static final ObservationDurationDescription TELAPSE
        The value field shall contain a floating point number giving the difference between the stop and start times of the observation in units of seconds. This keyword is synonymous with the ELAPTIME keyword.
      • TIME_END

        public static final ObservationDurationDescription TIME_END
        The value field shall contain a character string that gives the time at which the observation ended. This keyword is used in conjunction with the DATE-END keyword to give the ending time of the observation; the DATE-END keyword gives the ending calendar date, with format 'yyyy-mm-dd', and TIME-END gives the time within that day using the format 'hh:mm:ss.sss...'. This keyword should not be used if the time is included directly as part of the DATE-END keyword value with the format 'yyyy-mm-ddThh:mm:ss.sss'.
      • TIME_OBS

        public static final ObservationDurationDescription TIME_OBS
        The value field shall contain a character string that gives the time at which the observation started. This keyword is used in conjunction with the standard DATE-OBS keyword to give the starting time of the observation; the DATE-OBS keyword gives the starting calendar date, with format 'yyyy-mm-dd', and TIME-OBS gives the time within that day using the format 'hh:mm:ss.sss...'. This keyword should not be used if the time is included directly as part of the DATE-OBS keyword value with the format 'yyyy-mm-ddThh:mm:ss.sss'.
    • Method Detail

      • values

        public static ObservationDurationDescription[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (ObservationDurationDescription c : ObservationDurationDescription.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static ObservationDurationDescription valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null
      • comment

        public java.lang.String comment()
        Specified by:
        comment in interface IFitsHeader
      • key

        public java.lang.String key()
        Specified by:
        key in interface IFitsHeader