Index: /trunk/Ohana/src/libdvo/src/mosaic_astrom.c
===================================================================
--- /trunk/Ohana/src/libdvo/src/mosaic_astrom.c	(revision 21046)
+++ /trunk/Ohana/src/libdvo/src/mosaic_astrom.c	(revision 21047)
@@ -117,5 +117,6 @@
     if (strcmp(&images[i].coords.ctype[4], "-WRP")) continue;
     for (j = 0; j < Ndis; j++) {
-      if (DIStzero[j] != images[i].tzero) continue;
+      if (DIStzero[j] < images[i].tzero) continue;
+      if (DIStzero[j] > images[i].tzero + (int) images[i].exptime) continue;
       ChipMatch[i] = DISentry[j];
       goto got_match;