Ccxymatch works in the same manner as the linxymatch task except that the reference pixel list is replaced with a reference celestial coordinate list. The matching is done using a set of transformation coefficients supplied by the user, a set of tie points supplied by the user, or a pattern matching algorithm which searches for and matches similarly shaped triangles formed from the coordinates in the two lists. In all cases the user supplies a matching tolerance in arcseconds. Tie points can be typed in by the user or defined in a file.
Ccxymatch is available as part of the external add-on package IMMATCH. To retrieve and install immatch, follow the installation instructions found in the readme file.
Last updated: 25Oct1996