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FITS Extension Names

Registered with the IAU FITS Working Group

Extensions to the basic FITS format can be defined as specified in "Generalized Extensions and Blocking Factors for FITS", A&AS, 73, 359 (1988) and in Section 4.4 of the FITS Standard document. The following guidelines, as quoted from the first paper, should be considered before creating a new extension type:

Each extension type has a unique name given by the value of the mandatory XTENSION header keyword. The IAU FITS Working Group maintains this list of registered extension names. Anyone who wants to register a FITS extension name should contact the chairman of the IAU FITS Working Group.


Standard Extensions - These 3 extension types have been approved by the IAU FITS Working Group and are defined in Section 8 of the FITS Standard document as well as in the indicated Astronomy and Astrophysics journal articles.
Conforming Extensions - These conventions meet the requirements for a conforming extension as defined in A&AS, 73, p359-364, 1988 and in Section 4.4 of the FITS Standard document, however they have not been formally approved or endorsed by the IAU FITS Working Group.
Other Registered Extensions - These extension names have been suggested, but the proposals have not been fully developed or implemented.


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Last revised: Thursday, 23-Aug-2012 17:12:43 EDT
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