On Thu 2007/09/20 21:01:09 +0200, Thierry Forveille wrote in a message to: "LC's NoSpam Newsreading account" <nospam at mi.iasf.cnr.it> and copied to: fitsbits at donar.cv.nrao.edu >center, and CRREFn to the pixel position of the grid center relative CRREFn? (Please, please let this be a typo for CRPIXn.)