Index: /branches/eam_branches/ohana.20190329/src/opihi/mana/deimos_getalt.c
===================================================================
--- /branches/eam_branches/ohana.20190329/src/opihi/mana/deimos_getalt.c	(revision 40819)
+++ /branches/eam_branches/ohana.20190329/src/opihi/mana/deimos_getalt.c	(revision 40820)
@@ -263,4 +263,8 @@
       tmpv[Ntmp] = buffV[ix + iY*Nx] - So;
       tmpx[Ntmp] = psfV[ipsf];
+
+      if (!isfinite(tmpv[Ntmp])) continue;
+      if (!isfinite(tmpx[Ntmp])) continue;
+
       Ntmp ++;
     }