Index: trunk/ippTools/src/dettool.c
===================================================================
--- trunk/ippTools/src/dettool.c	(revision 12118)
+++ trunk/ippTools/src/dettool.c	(revision 12119)
@@ -784,5 +784,5 @@
         }
 
-	/** selection based on airmass range **/
+        /** selection based on airmass range **/
         psF32 select_airmass_min = psMetadataLookupF32(&status, config->args, "-select_airmass_min");
         if (!status) {
@@ -812,5 +812,5 @@
         }
 
-	/** selection based on exp_time range **/
+        /** selection based on exp_time range **/
         psF32 select_exp_time_min = psMetadataLookupF32(&status, config->args, "-select_exp_time_min");
         if (!status) {
@@ -840,5 +840,5 @@
         }
 
-	/** selection based on ccd_temp range **/
+        /** selection based on ccd_temp range **/
         psF32 select_ccd_temp_min = psMetadataLookupF32(&status, config->args, "-select_ccd_temp_min");
         if (!status) {
@@ -868,5 +868,5 @@
         }
 
-	/** selection based on posang **/
+        /** selection based on posang **/
         psF32 select_posang_min = psMetadataLookupF32(&status, config->args, "-select_posang_min");
         if (!status) {
@@ -2103,5 +2103,5 @@
     PS_ASSERT_PTR_NON_NULL(config, false);
 
-    // det_id, exp_tag, class_id, uri, recipe, -bg, -bg_stdev, & -bg_mean_stdev
+    // det_id, exp_tag, class_id, uri, recipe, -bg, -bg_stdev
     // are required
     bool status = false;
@@ -2172,8 +2172,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -bg_mean_stdev");
-        return false;
-    }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
         return false;
     }
@@ -2372,5 +2368,5 @@
     PS_ASSERT_PTR_NON_NULL(config, false);
 
-    // det_id, exp_tag, recip, -bg, -bg_stdev, & -bg_mean_stdev
+    // det_id, exp_tag, recip, -bg, -bg_stdev
     // are required
     bool status = false;
@@ -2423,8 +2419,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -bg_mean_stdev");
-        return false;
-    }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
         return false;
     }
@@ -2893,8 +2885,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -bg_mean_stdev");
-        return false;
-    }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
         return false;
     }
@@ -3749,5 +3737,5 @@
     PS_ASSERT_PTR_NON_NULL(config, false);
 
-    // det_id, recip, -bg, -bg_stdev, & -bg_mean_stdev
+    // det_id, recip, -bg, -bg_stdev
     // are required
     bool status = false;
@@ -3791,8 +3779,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -bg_mean_stdev");
-        return false;
-    }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
         return false;
     }
@@ -4023,8 +4007,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -bg_mean_stdev");
-        return false;
-    }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
         return false;
     }
@@ -4550,8 +4530,4 @@
         return false;
     }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
-        return false;
-    }
     // optional
     psString path_base = psMetadataLookupStr(&status, config->args, "-path_base");
@@ -5063,8 +5039,4 @@
         return false;
     }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
-        return false;
-    }
     // optional
     bool reject = psMetadataLookupBool(&status, config->args, "-reject");
@@ -5416,12 +5388,4 @@
         return false;
     }
-    if (!isnan(bg_mean_stdev)) {
-        if (!psMetadataAddF64(set, PS_LIST_TAIL, "bg_mean_stdev", 0, "==", bg_mean_stdev)) {
-            psError(PS_ERR_UNKNOWN, false, "failed to add item bg_mean_stdev");
-            psFree(set);
-            psFree(where);
-            return false;
-        }
-    }
 
     psString path_base = psMetadataLookupStr(&status, config->args, "-path_base");
@@ -5649,8 +5613,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -bg_mean_stdev");
-        return NULL;
-    }
-    if (isnan(bg_mean_stdev)) {
-        psError(PS_ERR_UNKNOWN, true, "-bg_mean_stdev is required");
         return NULL;
     }