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...Test if a WCS is a Spectral Coordinate System

Testing for a spectral coordinate system is basically the same as testing for a celestial coordinate system (see the previous section). The one difference is that you use the astIsASpecFrame function in place of the astIsASkyFrame function.

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AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council