x and
y are pixel coordinates in pixel units
and may be numbers or strings.CImage:XyToWcs
The XyToWcs method converts a pixel coordinate to a world coordinate system position If the World coordinate system uses celestial coordinates, then the values returned are right ascension and declination in units of degrees expressed as numbers. See the related CImage: XyToWcsStr.
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nRaDeg, nDecDeg = CImage:XyToWcs( x, y ) |
x and
y are pixel coordinates in pixel units
and may be numbers or strings.
nRaDeg and
nDecDeg are world coordinates in units
of degrees.
On
success, this method returns 2 numbers.
On
failure, this method returns 0,0.
The right ascension and declination are both returned in units of degrees to according to the FITS standard for these coordinate units. Time and angles may be converted to degrees as follows:
Right ascension (or longitude or time)
specified in degrees may be converted to a string in hours,
minutes, and seconds using DegToHms.
Declination specified in degrees may be
converted to a string in degrees, minutes, and seconds using
DegToDms.
CImage class, XyToWcsStr, WcsToXy, GetWcsType, WcsIsEq, Image Coordinate System, Subpixel Coordinate Definition, Date, Time, and Angle Functions
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