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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.
Next: AST_SETUNC - Store uncertainty information in a Region
Up: AST Routine Descriptions
Previous: AST_SETFITSU - Store an undefined keyword value in a FitsChan
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