Changes to dimmconfig files

The $STARLINK_DIR/share/smurf directory contains a set of dimmconfig...lis files that define "pre-canned" sets of configuration parameters for use with MAKEMAP. Some changes have been made to these files recently, partly to tidy them up and make them more user-friendly, but also to incorporate some new parameter values that have been found to give better results in the majority of cases.

The most important changes that you need to be aware of are:

1. The dimmconfig.lis file now uses MAPTOL to specify the convergence criterion rather than CHITOL. 
2. The value of 850.FLT.FILT_EDGE_LARGESCALE provided by dimmconfig_bright_extended.lis has changed from 300 to 600 arc-seconds. The 450 value remains unchanged at 600 arc-seconds.
3. The dimmconfig_bright_extended.lis file now inherits values from  dimmconfig.lis instead of dimmconfig_bright.lis. This means that the modified values previously provided by dimmconfig_bright.lis for COM.CORR_TOL, COM.GAIN_ABSTOL, COM.GAIN_TOL, DCTHRESH and NOISECLIPHIGH are no longer inherited by dimmconfig_bright_extended.lis. Consequently the new dimmconfig_bright_extended.lis will perform more aggressive rejection of bad values than the old version.

Other less important changes are:

1. The descriptions of individual parameters that previously were in dimmconfig.lis have been moved into $SMURF_DIR/smurf_makemap.def. This is the file that defines the complete list of all legal parameters for makemap and their default values. These description are also included in an appendix in SUN/258.
2. Parameters that are mainly intended for experimental use by makemap developers have been removed entirely from dimmconfig.lis but are still defined in the smurf_makemap.def file.
3. The prologues of the main dimmconfig files have been standardised.
4. Experimental dimmconfig files have been moved into a subdirectory called "experimental" within $STARLINK_DIR/share/smurf.