Index: trunk/psastro/src/psastro.c
===================================================================
--- trunk/psastro/src/psastro.c	(revision 10855)
+++ trunk/psastro/src/psastro.c	(revision 11269)
@@ -54,4 +54,10 @@
 
     bool chipastro = psMetadataLookupBool (NULL, config->arguments, "PSASTRO.CHIP.MODE");
+    bool mosastro  = psMetadataLookupBool (NULL, config->arguments, "PSASTRO.MOSAIC.MODE");
+    if (!chipastro && !mosastro) {
+	psLogMsg ("psastro", 3, "no astrometry mode selected, assuming chip mode\n");
+	chipastro= true;
+    }
+
     if (chipastro) {
 	if (!psastroChipAstrom (config, refs)) {
@@ -61,5 +67,4 @@
     }
 
-    bool mosastro = psMetadataLookupBool (NULL, config->arguments, "PSASTRO.MOSAIC.MODE");
     if (mosastro) {
 	if (!psastroMosaicAstrom (config, refs)) {