An HDS structure is created containing the astrometry information identified by IDA. This " astrometry structure" is stored as a component of an extension within the NDF specified by INDF (any previous astrometry structure is over-written). The names of the NDF extension and the astrometry structure are set by a call to IRA_LOCAT. If no such call is made the names of the extension and astrometry structure retain the values set up in IRA_INIT (" IRAS" and " ASTROMETRY" ). The astrometry structure has an HDS data type of IRAS_ASTROMETRY. The NDF extension must already exist before calling this routine.

Any existing astrometry structure is first deleted from the NDF (in which ever extension it was found) before creating the new one.

CALL IRA_EXPRT( IDA, INDF, STATUS )

IDA = INTEGER (Given)

INDF = INTEGER (Given)

STATUS = INTEGER (Given and Returned)