This task converts a position in an image from one coordinate system into positions in other coordinate systems. For example the routine can be used to convert a celestial sky position (RA, DEC) into detector coordinates (DETX, DETY), chip coordinates (RAWX, RAWY), X/Y pixels, Image pixels and TelCoords (theta, phi). It also gives the numbers of the CCDs which are included within an input region.
| Value | Units | Units |
| Theta | Off-axis angle | arc seconds |
| Phi | Azimuthal angle | Radians |
| X | X sky coord | 0.05 arcsec pixel |
| Y | Y sky coord | 0.05 arcsec pixel |
| DETX | Detector X coord | 0.05 arcsec pixel |
| DETY | Detector Y coord | 0.05 arcsec pixel |
| IM_X | Image X coord | image pixel |
| IM_Y | Image Y coord | image pixel |
| RA | Right ascension | degrees |
| DEC | Declination | degrees |
| RAWX | X chip coordinate | pixel |
| RAWY | Y chip coordinate | pixel |
| CCD(s) | CCD number(s) in region | - |
| Central CCD | CCD at region centre | - |
