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AST_SETREFPOS - Set the reference position in a specified celestial coordinate system

Description:
This routine sets the reference position (see attributes RefRA and RefDec) using axis values (in radians) supplied within the celestial coordinate system represented by a supplied SkyFrame.
Invocation:
CALL AST_SETREFPOS( THIS, FRM, LON, LAT, STATUS )
Arguments:
THIS = INTEGER (Given)
Pointer to the SpecFrame.
FRM = INTEGER (Given)
Pointer to the SkyFrame which defines the celestial coordinate system in which the longitude and latitude values are supplied. If AST__NULL is supplied, then the supplied longitude and latitude values are assumed to be FK5 J2000 RA and Dec values.
LON = DOUBLE PRECISION (Given)
The longitude of the reference point, in the coordinate system represented by the supplied SkyFrame (radians).
LAT = DOUBLE PRECISION (Given)
The latitude of the reference point, in the coordinate system represented by the supplied SkyFrame (radians).
STATUS = INTEGER (Given and Returned)
The global status.


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AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 210
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council