Index: trunk/psastro/src/psastroAnalysis.c
===================================================================
--- trunk/psastro/src/psastroAnalysis.c	(revision 28043)
+++ trunk/psastro/src/psastroAnalysis.c	(revision 35715)
@@ -86,5 +86,7 @@
     }
 
-    if (!psastroChooseRefstars (config, refs, "PSASTRO.INPUT")) {
+    bool skipastro = psMetadataLookupBool (&status, config->arguments, "PSASTRO.SKIP.ASTRO");
+
+    if (!psastroChooseRefstars (config, refs, "PSASTRO.INPUT", skipastro)) {
         psError (PSASTRO_ERR_UNKNOWN, false, "failed to select reference data for chips\n");
         psFree(refs);
@@ -108,5 +110,10 @@
         mosastro  = psMetadataLookupBool (&status, recipe, "PSASTRO.MOSAIC.MODE");
     }
-    if (!chipastro && !mosastro) {
+
+    if (skipastro) {
+        chipastro = false;
+        mosastro = false;
+        psLogMsg ("psastro", 3, "skip astrometry mode, accepting input astrometry\n");
+    } else if (!chipastro && !mosastro) {
         psLogMsg ("psastro", 3, "no astrometry mode selected, assuming chip astrometry\n");
         chipastro = true;
@@ -144,12 +151,14 @@
     }
 
-    if (!psastroZeroPoint (config)) {
-        psError(psErrorCodeLast(), false, "Failed to calculate zero point.");
-        return false;
-    }
+    if (!skipastro) {
+        if (!psastroZeroPoint (config)) {
+            psError(psErrorCodeLast(), false, "Failed to calculate zero point.");
+            return false;
+        }
 
-    if (!psastroAstromGuessCheck (config)) {
-        psError(psErrorCodeLast(), false, "Failed to check astrometry guess.");
-        return false;
+        if (!psastroAstromGuessCheck (config)) {
+            psError(psErrorCodeLast(), false, "Failed to check astrometry guess.");
+            return false;
+        }
     }