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5.1 Card Images
Up:
Definition of the Flexible
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4.6.2 Sequential Media
5 Headers
5.1 Card Images
5.1.1 Syntax
5.1.2 Components
5.1.2.1 Keyword (bytes 1-8)
5.1.2.2 Value Indicator (bytes 9-10)
5.1.2.3 Value/Comment (bytes 11-80)
5.2 Value
5.2.1 Character String
5.2.2 Logical
5.2.3 Integer Number
5.2.4 Real Floating Point Number
5.2.5 Complex Integer Number
5.2.6 Complex Floating Point Number
5.3 Units
5.4 Keywords
5.4.1 Mandatory Keywords
5.4.1.1 Principal
7.1.1.1
SIMPLE
Keyword
7.1.1.2
BITPIX
Keyword
7.1.1.3
NAXIS
Keyword
NAXISn
Keywords
7.1.1.9
END
Keyword
5.4.1.2 Conforming Extensions
XTENSION
Keyword
7.1.1.7
PCOUNT
Keyword
7.1.1.8
GCOUNT
Keyword
EXTEND
Keyword
5.4.2 Other Reserved Keywords
5.4.2.1 Keywords Describing the History or Physical Construction of the HDU
DATE
Keyword
ORIGIN
Keyword
BLOCKED
Keyword
5.4.2.2 Keywords Describing Observations
DATE-OBS
Keyword
DATExxxx
Keywords
TELESCOP
Keyword
INSTRUME
Keyword
OBSERVER
Keyword
OBJECT
Keyword
EQUINOX
Keyword
EPOCH
Keyword
5.4.2.3 Bibliographic Keywords
AUTHOR
Keyword
REFERENC
Keyword
5.4.2.4 Commentary Keywords
COMMENT
Keyword
HISTORY
Keyword
Keyword Field is Blank
5.4.2.5 Array Keywords
BSCALE
Keyword
BZERO
Keyword
BUNIT
Keyword
BLANK
Keyword
CTYPEn
Keywords
CRPIXn
Keywords
CRVALn
Keywords
CDELTn
Keywords
CROTAn
Keywords
DATAMAX
Keyword
DATAMIN
Keyword
5.4.2.6 Extension Keywords
EXTNAME
Keyword
EXTVER
Keyword
EXTLEVEL
Keyword
5.4.3 Additional Keywords
5.4.3.1 Requirements
5.4.3.2 Restrictions
5/13/1999
