\begin{theindex}

  \item $N_{\rm bits}$, \hyperpage{11, 12}, \hyperpage{17}

  \indexspace

  \item angular units, \hyperpage{10}, \hyperpage{30}
  \item ANSI, \hyperpage{3}, \hyperpage{55}
  \item ANSI, IEEE, \hyperpage{16}, \hyperpage{26}
  \item array descriptor, \hyperpage{22--24}, \hyperpage{26--28}
  \item array size, \hyperpage{11, 12}, \hyperpage{17}
  \item array value, \hyperpage{3, 4}, \hyperpage{14}, \hyperpage{20}
  \item array, multi-dimensional, \hyperpage{5}, \hyperpage{24}, 
		\hyperpage{29, 30}, \hyperpage{58}
  \item array, variable-length, \hyperpage{1}, \hyperpage{24}, 
		\hyperpage{27, 28}, \hyperpage{58}
  \item ASCII character, \hyperpage{3}, \hyperpage{16}, \hyperpage{18}, 
		\hyperpage{21}, \hyperpage{55}
  \item ASCII table, \hyperpage{18}
  \item ASCII text, \hyperpage{3, 4}, \hyperpage{7}, \hyperpage{13}, 
		\hyperpage{21}, \hyperpage{25}, \hyperpage{55}
  \item ASCII, ANSI, \hyperpage{65}
  \item AUTHOR, \hyperpage{13}

  \indexspace

  \item binary table, \hyperpage{4}, \hyperpage{16}, \hyperpage{22}, 
		\hyperpage{54}
  \item BITPIX, \hyperpage{11, 12}, \hyperpage{14}, \hyperpage{16--18}, 
		\hyperpage{22}
  \item BLANK, \hyperpage{14}, \hyperpage{16}
  \item blocking, \hyperpage{5}
  \item BSCALE, \hyperpage{14}, \hyperpage{16}
  \item BUNIT, \hyperpage{14}
  \item byte order, \hyperpage{5}, \hyperpage{16}, \hyperpage{25, 26}
  \item BZERO, \hyperpage{14}, \hyperpage{16}

  \indexspace

  \item case sensitivity, \hyperpage{6, 7}, \hyperpage{10}, 
		\hyperpage{19}, \hyperpage{22}
  \item character string, \hyperpage{3}, \hyperpage{7}, \hyperpage{21}, 
		\hyperpage{24, 25}
  \item checksum, \hyperpage{15}, \hyperpage{45}, \hyperpage{48, 49}, 
		\hyperpage{61--64}
  \item COMMENT, \hyperpage{6}, \hyperpage{13}
  \item complex data, \hyperpage{8, 9}, \hyperpage{23}, 
		\hyperpage{26, 27}
  \item compressed binary tables, \hyperpage{47}, \hyperpage{54}, 
		\hyperpage{61}
  \item compressed images, \hyperpage{44}, \hyperpage{54}, 
		\hyperpage{61}
  \item compression algorithms, \hyperpage{44}, \hyperpage{49}
  \item compression, lossy, \hyperpage{47}
  \item conforming extension, \hyperpage{3--5}
  \item CONTINUE, \hyperpage{6, 7}, \hyperpage{61}
  \item coordinate systems, \hyperpage{28}

  \indexspace

  \item DATAMAX, \hyperpage{14}
  \item DATAMIN, \hyperpage{14}
  \item DATE, \hyperpage{12}, \hyperpage{42}
  \item DATE-OBS, \hyperpage{13}, \hyperpage{42}
  \item DATExxxx, \hyperpage{13}, \hyperpage{42}
  \item deprecate, \hyperpage{3, 4}, \hyperpage{6}, \hyperpage{9}, 
		\hyperpage{12}, \hyperpage{16}, \hyperpage{21}, 
		\hyperpage{29}, \hyperpage{32}, \hyperpage{34}
  \item dithering, \hyperpage{46}
  \item durations, \hyperpage{43}

  \indexspace

  \item END, \hyperpage{5}, \hyperpage{11}, \hyperpage{17--19}, 
		\hyperpage{22}, \hyperpage{28}
  \item EPOCH, \hyperpage{34}
  \item EQUINOX, \hyperpage{34}
  \item EXTEND, \hyperpage{12}
  \item extension, \hyperpage{3--5}, \hyperpage{14}, \hyperpage{16}, 
		\hyperpage{58}, \hyperpage{60}
  \item extension registration, \hyperpage{5}, \hyperpage{11}
  \item extension type name, \hyperpage{3}, \hyperpage{5}, 
		\hyperpage{11}, \hyperpage{14}
  \item extension, conforming, \hyperpage{3--5}
  \item extension, standard, \hyperpage{4, 5}
  \item EXTLEVEL, \hyperpage{15}
  \item EXTNAME, \hyperpage{14}
  \item EXTVER, \hyperpage{14}

  \indexspace

  \item field, empty, \hyperpage{22}, \hyperpage{25, 26}
  \item file size, \hyperpage{4}
  \item fill, \hyperpage{5, 6}, \hyperpage{11}, \hyperpage{17, 18}, 
		\hyperpage{20, 21}, \hyperpage{24, 25}, \hyperpage{28}
  \item FITS structure, \hyperpage{3, 4}, \hyperpage{6}, \hyperpage{12}
  \item floating-point, \hyperpage{8}, \hyperpage{26}, \hyperpage{55}
  \item floating-point {\em FITS\/} agreement, \hyperpage{65}
  \item floating-point, complex, \hyperpage{9}, \hyperpage{26}
  \item format, data, \hyperpage{16}
  \item format, fixed, \hyperpage{7}
  \item format, free, \hyperpage{7, 8}, \hyperpage{52}
  \item format, keywords, \hyperpage{7}
  \item Fortran, \hyperpage{5}, \hyperpage{19--21}, \hyperpage{24}, 
		\hyperpage{65}

  \indexspace

  \item GCOUNT, \hyperpage{11, 12}, \hyperpage{17--19}, \hyperpage{22}
  \item Green Bank convention, \hyperpage{30}, \hyperpage{61}, 
		\hyperpage{64}
  \item group parameter value, \hyperpage{3}, \hyperpage{17, 18}
  \item GROUPS, \hyperpage{17}
  \item GTI tables, \hyperpage{43}
  \item GZIP compression, \hyperpage{50}

  \indexspace

  \item H-compress algorithm, \hyperpage{50}
  \item HDU, \hyperpage{3}, \hyperpage{11}
  \item HDU, extension, \hyperpage{3, 4}
  \item HDU, primary, \hyperpage{3--5}
  \item header space, preallocation, \hyperpage{13}, \hyperpage{61}
  \item heap, \hyperpage{3}, \hyperpage{11}, \hyperpage{22--24}, 
		\hyperpage{26--28}
  \item HISTORY, \hyperpage{6}, \hyperpage{13}
  \item hyphen, \hyperpage{6}, \hyperpage{19}, \hyperpage{23}, 
		\hyperpage{30}, \hyperpage{34}

  \indexspace

  \item IAU, \hyperpage{1}, \hyperpage{3}, \hyperpage{65}
  \item IAU Style Manual, \hyperpage{10}, \hyperpage{65}
  \item IAUFWG, \hyperpage{1}, \hyperpage{3}, \hyperpage{5}, 
		\hyperpage{11}, \hyperpage{29}, \hyperpage{40}, 
		\hyperpage{58}
  \item IEEE floating-point, \hyperpage{16}
  \item IEEE special values, \hyperpage{4}, \hyperpage{14}, 
		\hyperpage{16}, \hyperpage{55}
  \item image extension, \hyperpage{18}
  \item INHERIT, \hyperpage{15}, \hyperpage{61}, \hyperpage{64}
  \item INSTRUME, \hyperpage{13}
  \item integer, 16-bit, \hyperpage{16}, \hyperpage{25}
  \item integer, 32-bit, \hyperpage{16}, \hyperpage{25, 26}
  \item integer, 64-bit, \hyperpage{16}, \hyperpage{26}
  \item integer, 8-bit, \hyperpage{16}, \hyperpage{25}
  \item integer, complex, \hyperpage{8}
  \item integer, unsigned, \hyperpage{14}, \hyperpage{16}, 
		\hyperpage{23}, \hyperpage{25, 26}
  \item ISO-8601 date, \hyperpage{36}

  \indexspace

  \item JD, \hyperpage{36}

  \indexspace

  \item keyword record, \hyperpage{4}, \hyperpage{6}
  \item keyword, commentary, \hyperpage{6}, \hyperpage{13}
  \item keyword, indexed, \hyperpage{4}, \hyperpage{6}, \hyperpage{11}
  \item keyword, mandatory, \hyperpage{6, 7}, \hyperpage{10}, 
		\hyperpage{16}, \hyperpage{18}, \hyperpage{22}, 
		\hyperpage{54}
  \item keyword, new, \hyperpage{15}
  \item keyword, order, \hyperpage{11}, \hyperpage{16}, \hyperpage{18}
  \item keyword, required, \hyperpage{4}, \hyperpage{10, 11}, 
		\hyperpage{16}, \hyperpage{18}, \hyperpage{22}, 
		\hyperpage{44}, \hyperpage{47}
  \item keyword, reserved, \hyperpage{4}, \hyperpage{12}, 
		\hyperpage{17--19}, \hyperpage{22}, \hyperpage{30}, 
		\hyperpage{32}, \hyperpage{42}, \hyperpage{44}, 
		\hyperpage{49}, \hyperpage{54}
  \item keyword, valid characters, \hyperpage{6}

  \indexspace

  \item logical value, \hyperpage{8}, \hyperpage{25, 26}

  \indexspace

  \item magnetic tape, \hyperpage{6}
  \item min and max in columns, keywords, \hyperpage{20}, 
		\hyperpage{24}, \hyperpage{61}
  \item MJD, \hyperpage{36}

  \indexspace

  \item NaN, IEEE, \hyperpage{16}, \hyperpage{26}, \hyperpage{55, 56}
  \item NAXIS, \hyperpage{4, 5}, \hyperpage{11, 12}, \hyperpage{16--19}, 
		\hyperpage{22}
  \item NAXIS1, \hyperpage{17}, \hyperpage{19}, \hyperpage{21, 22}, 
		\hyperpage{24, 25}, \hyperpage{28}
  \item NAXIS2, \hyperpage{19}, \hyperpage{21, 22}, \hyperpage{24, 25}, 
		\hyperpage{28}
  \item NAXISn, \hyperpage{4, 5}, \hyperpage{11, 12}, 
		\hyperpage{17, 18}
  \item NULL, ASCII, \hyperpage{3}, \hyperpage{25}

  \indexspace

  \item OBJECT, \hyperpage{13}
  \item OBSERVER, \hyperpage{13}
  \item order, byte, \hyperpage{5}, \hyperpage{16}, \hyperpage{25, 26}
  \item order, extensions, \hyperpage{5}
  \item order, keyword, \hyperpage{6}, \hyperpage{11}, \hyperpage{16}, 
		\hyperpage{18}
  \item order, {\em FITS\/} structures, \hyperpage{4}
  \item ORIGIN, \hyperpage{12}

  \indexspace

  \item PCOUNT, \hyperpage{11, 12}, \hyperpage{17--19}, \hyperpage{22}, 
		\hyperpage{28}
  \item phase, \hyperpage{42}
  \item physical value, \hyperpage{3, 4}, \hyperpage{14}, 
		\hyperpage{17, 18}, \hyperpage{20}, \hyperpage{23}
  \item PLIO compression, \hyperpage{50}
  \item primary data array, \hyperpage{3--5}, \hyperpage{16--18}
  \item primary header, \hyperpage{3, 4}, \hyperpage{11}, 
		\hyperpage{16}
  \item PSCALn, \hyperpage{17, 18}
  \item PTYPEn, \hyperpage{17, 18}
  \item PZEROn, \hyperpage{17, 18}

  \indexspace

  \item quantization of data, \hyperpage{46}, \hyperpage{61}

  \indexspace

  \item random groups, \hyperpage{3}, \hyperpage{14}, \hyperpage{16}
  \item random groups array, \hyperpage{17}
  \item REFERENC, \hyperpage{13}
  \item repeat count, \hyperpage{4}, \hyperpage{22}, \hyperpage{25}
  \item Rice compression, \hyperpage{49}

  \indexspace

  \item scaling, data, \hyperpage{17, 18}, \hyperpage{20}, 
		\hyperpage{23}
  \item sign bit, \hyperpage{16}
  \item sign character, \hyperpage{8}, \hyperpage{21}
  \item SIMPLE, \hyperpage{5}, \hyperpage{11}, \hyperpage{16}
  \item slash, \hyperpage{6}, \hyperpage{10}
  \item solar system ephemeris, \hyperpage{40}
  \item special records, \hyperpage{3--5}
  \item special values, IEEE, \hyperpage{26}
  \item standard extension, \hyperpage{4, 5}

  \indexspace

  \item TABLE, \hyperpage{18}
  \item TBCOLn, \hyperpage{19}
  \item TDIMn, \hyperpage{24}
  \item TDISPn, \hyperpage{20}, \hyperpage{23}
  \item TELESCOP, \hyperpage{13}
  \item TFIELDS, \hyperpage{19}, \hyperpage{22}
  \item TFORMn, \hyperpage{19}, \hyperpage{22}, \hyperpage{25--27}
  \item THEAP, \hyperpage{24}, \hyperpage{28}
  \item time, \hyperpage{12, 13}, \hyperpage{34}, \hyperpage{36}
  \item time keywords, \hyperpage{41}
  \item time reference, \hyperpage{38}
  \item time reference direction, \hyperpage{40}
  \item time reference position, \hyperpage{38, 39}
  \item time resolution, \hyperpage{41}
  \item time scale, \hyperpage{37, 38}
  \item time units, \hyperpage{40, 41}
  \item time, universal, \hyperpage{12}, \hyperpage{37}
  \item timelag, \hyperpage{42}
  \item TIMESYS, \hyperpage{37}
  \item TNULLn, \hyperpage{20, 21}, \hyperpage{23}, \hyperpage{25, 26}
  \item TSCALn, \hyperpage{20}, \hyperpage{23}, \hyperpage{28}
  \item TTYPEn, \hyperpage{19}, \hyperpage{22}
  \item TUNITn, \hyperpage{20}, \hyperpage{23}
  \item two's complement, \hyperpage{16}, \hyperpage{25, 26}
  \item TZEROn, \hyperpage{20}, \hyperpage{23}, \hyperpage{28}

  \indexspace

  \item underscore, \hyperpage{6}, \hyperpage{19}, \hyperpage{23}
  \item units, \hyperpage{4}, \hyperpage{10}, \hyperpage{14}, 
		\hyperpage{20}, \hyperpage{23}, \hyperpage{30}, 
		\hyperpage{35}

  \indexspace

  \item value, \hyperpage{6, 7}, \hyperpage{12}
  \item value, undefined, \hyperpage{6, 7}, \hyperpage{14}, 
		\hyperpage{16}, \hyperpage{20, 21}, \hyperpage{23}, 
		\hyperpage{59}
  \item variable length arrays, compression, \hyperpage{49}
  \item variable-length array, \hyperpage{1}, \hyperpage{24}, 
		\hyperpage{27, 28}, \hyperpage{58}

  \indexspace

  \item WCS, \hyperpage{28}
  \item WCS, celestial, \hyperpage{33}
  \item WCS, spectral, \hyperpage{34}
  \item WCS, timing, \hyperpage{36}, \hyperpage{61}

  \indexspace

  \item XTENSION, \hyperpage{3}, \hyperpage{5}, \hyperpage{11}, 
		\hyperpage{14}, \hyperpage{18}, \hyperpage{22}

\end{theindex}