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Hi Tim, thanks for the reply. > > ascout does not understand AST coordinate frames so a bit more work is > required to get it to do what you want. Using KAPPA SETAXIS with MODE=WCS > should copy the world coordinate values to the AXIS extension understood by > Figaro. If you are using velocity you'll also need to call WCSATTRIB to > change 'system(3)' to FREQ. > ascout gave back pixel i.e. channel values as a first column instead of actual frequencies, after I called wcsattrib. I also tried axunits, but it gave the same output. At least I managed to write out one Tb value per line using ndf2ascii. Many thanks. Marija -- ***************************************************************** * Marija Stankovic Department of Astronomy * * PhD candidate University of Toronto * * tel. (+1) 416 978-7104 50 Saint George Street * * fax. (+1) 416 946-7287 Toronto, ON M5S 3H4 * *****************************************************************