Index: /tags/ipp-20170121/Ohana/src/getstar/src/ReadImageHeader.c
===================================================================
--- /tags/ipp-20170121/Ohana/src/getstar/src/ReadImageHeader.c	(revision 39999)
+++ /tags/ipp-20170121/Ohana/src/getstar/src/ReadImageHeader.c	(revision 40000)
@@ -52,4 +52,8 @@
   // image[0].tzero = parse_time (header);
   // }
+
+  // in this program, we need a vaguely reasonable value so mosaic_astrom.c will select the mosaic image by the time/date
+  image[0].tzero = 1;
+  image[0].exptime = 1;
 
   /* only load astrometry, NAXIS1,2, and time if this is a MOSAIC_PHU (ctype is ....-DIS) */