x and
y are pixel coordinates in pixel units
and may be numbers or strings.CImage:XyToWcsStr
The XyToWcsStr 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 but expressed as strings. See the related CImage: XyToWcs.
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sRaHms, sDegDms = CImage:XyToWcs( x, y ) |
x and
y are pixel coordinates in pixel units
and may be numbers or strings.
sRaHms and
sDegDms are world coordinate strings in
units of HMS and DMS.
On
success, this method returns 2 strings.
On
failure, this method returns two empty strings.
The right ascension in hours, minutes, and seconds is formatted as "HH:MM:SS.SSS". The declination in degrees, minutes, and seconds is formatted as "-DD:MM:SS.SSS" where the - sign is used of the angle is negative. The right ascension and declination strings may be converted to degrees as follows:
Right ascension may be converted to
decimal degrees using HmsToDeg.
Declination may be converted to decimal
degrees using DmsToDeg.
CImage class, XyToWcs, WcsToXy, Image Coordinate System, Subpixel Coordinate Definition, Date, Time, and Angle Functions
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