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Description:
This function returns the reference position (specified
by attributes
RefRA and
RefDec) converted to the celestial coordinate system
represented by a supplied
SkyFrame. The celestial longitude and latitude
values are returned in radians.
Synopsis
void astGetRefPos( AstSpecFrame
this,
AstSkyFrame frm,
double lon,
double lat
)
Parameters:
this
frm
Pointer to the SkyFrame
which defines the required celestial coordinate system. If NULL is supplied, then the
longitude and latitude values are returned as FK5 J2000 RA and Dec values.
lon
A
pointer to a double in which to store the longitude of the reference point, in the
coordinate system represented by the supplied SkyFrame (radians).
lat
A
pointer to a double in which to store the latitude of the reference point, in the
coordinate system represented by the supplied SkyFrame (radians).
Notes:
Copyright (C) 2021 East Asian Observatory
- ←Prev
- AST
A Library for Handling
World
Coordinate Systems
in Astronomy - Next→
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