EDP Sciences
Free Access

Table C.1

Mandatory FITS keywords for the structures described in this document.

Primary Conforming Image ASCII table Binary table Random groups
HDU extension extension extension extension records

SIMPLE XTENSION XTENSION1 XTENSION2 XTENSION3 SIMPLE
BITPIX BITPIX BITPIX BITPIX = 8 BITPIX = 8 BITPIX
NAXIS NAXIS NAXIS NAXIS = 2 NAXIS = 2 NAXIS
NAXISn4 NAXISn4 NAXISn4 NAXIS1 NAXIS1 NAXIS1 = 0
END PCOUNT PCOUNT = 0 NAXIS2 NAXIS2 NAXISn4
GCOUNT GCOUNT = 1 PCOUNT = 0 PCOUNT GROUPS = T
END END GCOUNT = 1 GCOUNT = 1 PCOUNT
TFIELDS TFIELDS GCOUNT
TFORMn5 TFORMn5 END
TBCOLn5 END
END

Notes. 

(1)

XTENSION = ’IMAGE’ for the image extension.

(2)

XTENSION = ’TABLE’ for the ASCII table extension.

(3)

XTENSION = ’BINTABLE’ for the binary table extension.

(4)

Runs from 1 through the value of NAXIS.

(5)

Runs from 1 through the value of TFIELDS.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.