7.1. IMAGE EXTENSION

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END Keyword  This keyword has no associated value. Bytes 9 through 80 shall be

filled with ASCII spaces.

7.1.2

Other Reserved Keywords

The reserved keywords defined in §4.4.2 (except for EXTEND and BLOCKED) may appear

in an image extension header. The keywords must be used as defined in that section.

7.1.3

Data Sequence

The data format shall be identical to that of a primary data array as described in §3.3.2.

FITS Standard