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Hi,I am working on MOSAIC data and I have the problem, that when I want to get a good wcs solution I always get an high error for the rms when I am using msccmatch. In order to get a better solution I tried interactive fitting, but I was not able to change the parameters for the x and y order. I tried to change the parameters in the fitting window, but it does not change the parameters. Even when I changing the parameters with epar geomap, the msccmatch routine always only uses the x/y order 2 for fitting. Thats quite strange, I expect when I change some parameters, that this is valid for all tasks which uses that routine.Thanks for your help.P.S. here are my parameters for msccmatch I R A F
Image Reduction and Analysis Facility
PACKAGE = mscred
TASK = msccmatchinput = obj179 List of input mosaic exposures
coords = 2770_co2 Coordinate file (ra/dec)
(outcoor= test14) List of updated coordinate files
(usebpm = no) Use bad pixel masks?
(verbose= yes) Verbose? # Coarse Search
(nsearch= 100) Maximum number of positions to use in search
(search = 20.) Translation search radius (arcsec)
(rsearch= 0.2) Rotation search radius (deg) # Fine Centroiding
(cbox = 11) Centering box (pixels)
(maxshif= 5.) Maximum centering shift to accept (arcsec)
(csig = 0.1) Maximum centering uncertainty to accept (arcsec)
(cfrac = 0.5) Minimum fraction of accepted centers
(listcoo= yes) List centered coordinates in verbose mode? # WCS Fitting
(nfit = 5) Min for fit (>0) or max not found (<=0)
(rms = 0.2) Maximum fit RMS to accept (arcsec)
(fitgeom= general) Fitting geometry
(reject = 3.) Fitting rejection limit (sigma)
(update = yes) Update coordinate systems?
(interac= yes) Interactive?
(fit = yes) Interactive fitting?
(graphic= stdgraph) Graphics device
(cursor = ) Graphics cursoraccept = no Accept solution?
(mode = ql)