DS9 gaussian fitting

One thing DS9 desperately needs is an interactive gaussian fitter. I have NOT implemented one yet, but it is high on my to do list. Has anyone else (googlers?) tried or succeeded in implementing such a thing? Ideally, something with NO dependencies: if I write one, it will require python, numpy, and probably pyds9 - ick. Straight-up TCL would be very much preferable.

ds9 commands to test distortion mapping

trying to figure out whether I'm screwing something up in the distortion map phase... the -scale limits command here is new and useful

ds9 testfields_*pix5*_map0.fits -cmap sls -scale limits 0 .005 -zoom 4 -match frames wcs -match scales -match colorbars &
ds9 testfields_*pix15*_map0.fits -cmap sls -scale limits 0 .003 -zoom 4 -match frames wcs -match scales -match colorbars &
ds9 testfields_*pix10*_map0.fits -cmap sls -scale limits 0 .004 -zoom 4 -match frames wcs -match scales -match colorbars &

Russell Owen, DS9

As I might have expected, Russell Owen from the University of Washington - the man responsible for the Telescope User Interface, TUI, on the Apache Point Observatory telescope - has written up a help page for XPA access points on ds9. He knows his stuff... I think I need to aspire to that.

DS9 - crosshairs on command line

ds9 pmm*_map0.fits -zscale -match scales -zoom 4 -match frames wcs -crosshair 17:33:02.7 -13:04:49.5 wcs fk5 -lock crosshairs wcs &
ds9 pmp*_map0.fits -zscale -match scales -zoom 4 -match frames wcs -crosshair 17:33:02.7 -13:04:49.5 wcs fk5 -lock crosshairs wcs &
ds9 mpp*_map0.fits -zscale -match scales -zoom 4 -match frames wcs -crosshair 17:33:02.7 -13:04:49.5 wcs fk5 -lock crosshairs wcs &
ds9 mpm*_map0.fits -zscale -match scales -zoom 4 -match frames wcs -crosshair 17:33:02.7 -13:04:49.5 wcs fk5 -lock crosshairs wcs &

DS9's crosshairs are extremely useful for checking on WCS coordinate matching, especially when they can be set precisely using the command line. I don't know how to set the coordinates exactly interactively... that may come later.