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.
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