Index: trunk/psModules/src/astrom/pmAstrometryWCS.c
===================================================================
--- trunk/psModules/src/astrom/pmAstrometryWCS.c	(revision 41533)
+++ trunk/psModules/src/astrom/pmAstrometryWCS.c	(revision 41810)
@@ -608,5 +608,5 @@
     // as of r40806, psPlaneTransformInvert supplies the extra order (if non-linear)
     psFree (chip->fromFPA);
-    chip->fromFPA = psPlaneTransformInvert(NULL, chip->toFPA, *region, 50, 4);
+    chip->fromFPA = psPlaneTransformInvert(NULL, chip->toFPA, *region, 100, 6);
     psFree (region);
 
@@ -668,5 +668,5 @@
     // as of r40806, psPlaneTransformInvert supplies the extra order (if non-linear)
     psFree (chip->fromFPA);
-    chip->fromFPA = psPlaneTransformInvert(NULL, chip->toFPA, *region, 50, 4);
+    chip->fromFPA = psPlaneTransformInvert(NULL, chip->toFPA, *region, 100, 6);
     psFree (region);
 
@@ -706,5 +706,5 @@
       additional_orders = config_additional_orders; 
     }
-    fpa->fromTPA = psPlaneTransformInvert(NULL, fpa->toTPA, region, 50, additional_orders);
+    fpa->fromTPA = psPlaneTransformInvert(NULL, fpa->toTPA, region, 100, additional_orders);
     return true;
 }
@@ -1032,5 +1032,5 @@
 
     // NOTE: the extraOrders value (4) should be ignored since outToFPA is specified to be linear
-    psPlaneTransform *outFromFPA = psPlaneTransformInvert(NULL, outToFPA, *outputBounds, 50, 4);
+    psPlaneTransform *outFromFPA = psPlaneTransformInvert(NULL, outToFPA, *outputBounds, 100, 6);
     if (!outFromFPA) {
         psFree(outToFPA);