Index: trunk/ippconfig/gpc1/camera.config
===================================================================
--- trunk/ippconfig/gpc1/camera.config	(revision 13599)
+++ trunk/ippconfig/gpc1/camera.config	(revision 13630)
@@ -80,2 +80,6 @@
 #	PSPHOT		STR	psphot.config		# psphot details
 END
+
+# Rejection levels for detrend creation
+REJECTIONS STR gpc1/rejections.config
+
Index: trunk/ippconfig/gpc1/rejections.config
===================================================================
--- trunk/ippconfig/gpc1/rejections.config	(revision 13630)
+++ trunk/ippconfig/gpc1/rejections.config	(revision 13630)
@@ -0,0 +1,104 @@
+
+BIAS METADATA
+  FILTER      	     STR  *
+  EXPECTED    	     F32  0.0
+  IMFILE.MEAN 	     F32  1.0
+  IMFILE.STDEV       F32 20.0
+  IMFILE.SN          F32  0.0
+  IMFILE.BIN.SN      F32  0.0
+  IMFILE.MEANSTDEV   F32  0.5
+  EXP.MEAN           F32  0.5
+  EXP.STDEV          F32 20.0
+  EXP.MEANSTDEV      F32  0.0
+  EXP.SN             F32  0.0
+  EXP.BIN.SN         F32  0.0
+  ENSEMBLE.MEAN      F32  3.0
+  ENSEMBLE.STDEV     F32 20.0
+  ENSEMBLE.MEANSTDEV F32  0.0
+END
+
+DARK METADATA
+  FILTER      	     STR  *
+  EXPECTED    	     F32  0.0
+  IMFILE.MEAN 	     F32  1.0
+  IMFILE.STDEV       F32  0.0
+  IMFILE.SN          F32  0.0
+  IMFILE.BIN.SN      F32  0.0
+  IMFILE.MEANSTDEV   F32  0.5
+  EXP.MEAN           F32  0.5
+  EXP.STDEV          F32  0.0
+  EXP.MEANSTDEV      F32  0.0
+  EXP.SN             F32  0.0
+  EXP.BIN.SN         F32  0.0
+  ENSEMBLE.MEAN      F32  3.0
+  ENSEMBLE.STDEV     F32 20.0
+  ENSEMBLE.MEANSTDEV F32  0.0
+END
+
+SHUTTER METADATA
+  FILTER      	     STR  *
+  EXPECTED    	     F32  0.0
+  IMFILE.MEAN 	     F32  0.0
+  IMFILE.STDEV       F32  0.0
+  IMFILE.SN          F32  0.0
+  IMFILE.BIN.SN      F32  0.0
+  IMFILE.MEANSTDEV   F32  0.0
+  EXP.MEAN           F32  0.0
+  EXP.STDEV          F32  0.0
+  EXP.MEANSTDEV      F32  0.0
+  EXP.SN             F32  0.0
+  EXP.BIN.SN         F32  0.0
+  ENSEMBLE.MEAN      F32  0.0
+  ENSEMBLE.STDEV     F32  0.0
+  ENSEMBLE.MEANSTDEV F32  0.0
+END
+
+FLAT METADATA
+  FILTER      	     STR  *
+  EXPECTED    	     F32  0.0
+  IMFILE.MEAN 	     F32  0.0
+  IMFILE.STDEV       F32  0.0
+  IMFILE.SN          F32  0.0
+  IMFILE.BIN.SN      F32  0.0
+  IMFILE.MEANSTDEV   F32  0.0
+  EXP.MEAN           F32  0.0
+  EXP.STDEV          F32  0.0
+  EXP.MEANSTDEV      F32  0.0
+  EXP.SN             F32  0.0
+  EXP.BIN.SN         F32  0.0
+  ENSEMBLE.MEAN      F32  0.0
+  ENSEMBLE.STDEV     F32  0.0
+  ENSEMBLE.MEANSTDEV F32  3.0
+END
+
+FRINGE METADATA
+  FILTER      	     STR  *
+  EXPECTED    	     F32  0.0
+  IMFILE.MEAN 	     F32  0.0
+  IMFILE.STDEV       F32  0.0
+  IMFILE.SN          F32  0.0
+  IMFILE.BIN.SN      F32  0.0
+  IMFILE.MEANSTDEV   F32  0.0
+  EXP.MEAN           F32  0.0
+  EXP.STDEV          F32  0.0
+  EXP.MEANSTDEV      F32  0.0
+  EXP.SN             F32  0.0
+  EXP.BIN.SN         F32  0.0
+  ENSEMBLE.MEAN      F32  0.0
+  ENSEMBLE.STDEV     F32  0.0
+  ENSEMBLE.MEANSTDEV F32  0.0
+END
+
+# FILTER is an additional qualifier, and may be "*" (or absent!), in which case it matches everything
+# EXPECTED is the expected mean value
+# IMFILE.MEAN is the maximum permitted mean value for an imfile, relative to the standard deviation
+# IMFILE.STDEV is the maximum permitted standard deviation for an imfile
+# EXP.MEAN is the maximum permitted mean value for an exposure, relative to the standard deviation
+# EXP.STDEV is the maximum permitted standard deviation for an exposure
+# EXP.MEANSTDEV is the maximum permitted mean standard deviation for an exposure relative to the mean
+# ENSEMBLE.MEAN is the maximum permitted mean for an ensemble of exposures
+# ENSEMBLE.STDEV is the maximum permitted standard deviation for an ensemble of exposures
+# ENSEMBLE.MEANSTDEV is the maximum permitted mean standard deviation for an ensemble of exposures
+# IMFILE.SN is the minimum permitted signal-to-noise for an imfile
+# EXP.SN is the minimum permitted signal-to-noise for an exposure
+# These values (all except FILTER) may be zero, in which case no clipping is applied.
