Index: trunk/psastro/src/psastroAnalysis.c
===================================================================
--- trunk/psastro/src/psastroAnalysis.c	(revision 12806)
+++ trunk/psastro/src/psastroAnalysis.c	(revision 13832)
@@ -3,9 +3,15 @@
 bool psastroAnalysis (pmConfig *config) {
 
+    int nStars;
+
     // interpret the available initial astrometric information
     // apply the initial guess
-    if (!psastroAstromGuess (config)) {
+    if (!psastroAstromGuess (&nStars, config)) {
 	psError (PSASTRO_ERR_UNKNOWN, false, "failed to determine initial astrometry guess\n");
 	return false;
+    }
+    if (nStars == 0) {
+	psLogMsg ("psastro", 2, "skipping astrometry analysis : no stars\n");
+	return true;
     }