Index: trunk/Ohana/src/relastro/include/relastro.h
===================================================================
--- trunk/Ohana/src/relastro/include/relastro.h	(revision 39600)
+++ trunk/Ohana/src/relastro/include/relastro.h	(revision 39610)
@@ -163,5 +163,7 @@
   double D, dD;
   double T, dT;
-  double Wx, Wy;
+  double Qx, Qy; // unmodified error-based weight (1/dX^2)
+  double qx, qy; // IRLS-modified error-based weight (1/dX^2)
+  double Wx, Wy; // IRLS weight factor
   double rx, ry;
   double u;