Index: trunk/psastro/src/psastroMosaicHeaders.c
===================================================================
--- trunk/psastro/src/psastroMosaicHeaders.c	(revision 10438)
+++ trunk/psastro/src/psastroMosaicHeaders.c	(revision 10613)
@@ -39,5 +39,5 @@
     }
 
-    psMetadata *mosaic = pmAstromWriteBilevelMosaic (fpa->projection, fpa->toTangentPlane, plateScale);
+    psMetadata *mosaic = pmAstromWriteBilevelMosaic (fpa->toSky, fpa->toTPA, plateScale);
 
     // XXX what is the EXTNAME??