Index: trunk/Ohana/src/getstar/src/ReadImageHeader.c
===================================================================
--- trunk/Ohana/src/getstar/src/ReadImageHeader.c	(revision 19823)
+++ trunk/Ohana/src/getstar/src/ReadImageHeader.c	(revision 20184)
@@ -20,4 +20,9 @@
       haveNx = gfits_scan (header, "IMNAXIS1",   "%d", 1, &Nx);
       haveNy = gfits_scan (header, "IMNAXIS2",   "%d", 1, &Ny);
+  }
+
+  if (!haveNx && !haveNy) {
+      haveNx = gfits_scan (header, "ZNAXIS1",   "%d", 1, &Nx);
+      haveNy = gfits_scan (header, "ZNAXIS2",   "%d", 1, &Ny);
   }