> I would guess we do not reallyhave the expertiseto be a free extension of > the IRAF helpdesk. I for one would have to start from scratch on this > since I have next to no familiarity with IRAF. Long ago we did have a local IRAF pundit, Rhys I think, who could answer questions before the IRAF team were in. I have suggested that Martin contact the IRAF helpdesk. There may be words of wisdom in Martin Clayton's Echelle spectroscopy cookbook SC/3. > More to the point can we not direct him to some equivalent Starlink app? Feel free. I just wanted to send a quick reply off to Martin, and see if on the off chance any of you pundits out there knew any IRAF. For all I know, this may a well-known problem that your local IRAF users have posed. Malcolm