Lawrence Rudnick wrote: > Actually, DX and DY don't appear to be written with quite enough > precision. i've got 0.5" pixels, so I'd have to go directly from the RA > and DEC to pixels if there's no way to get SAD pixel output. SAD writes a MF file which has a million columns or so. You can train PRTAB and/or MFPRT to print just what you need. Eric