Fixed dark frame subtraction

scripts/darkSubtract.sh

@@ -3,23 +3,26 @@
 cd $ALLSKY_HOME
 
 # Subtract dark frame if there is one defined in config.sh
-# Find the closest dark frame temperature wise
-CLOSEST_TEMP=0
-DIFF=100
-for file in darks/*
-do
-    if [[ -f $file ]]; then
-        DARK_TEMP=$(echo $file | awk -F[/.] '{print $2}')
-        DELTA=$(expr $TEMP - $CLOSEST_TEMP)
-	ABS_DELTA=${DELTA#-}
 
-        if [ "$ABS_DELTA" -lt "$DIFF"  ]; then
-                DIFF=$DELTA
-                CLOSEST_TEMP=$DARK_TEMP
-        fi
-    fi
-done
+if [ "$DARK_FRAME_SUBTRACTION" == "true" ]; then
+	# Find the closest dark frame temperature wise
+	CLOSEST_TEMP=0
+	DIFF=100
+	for file in darks/*
+	do
+    		if [[ -f $file ]]; then
+        		DARK_TEMP=$(echo $file | awk -F[/.] '{print $2}')
+        		DELTA=$(expr $TEMP - $CLOSEST_TEMP)
+			ABS_DELTA=${DELTA#-}
 
-if [ -e "darks/$CLOSEST_TEMP.$EXTENSION" ] ; then
-        convert "$FULL_FILENAME" "darks/$CLOSEST_TEMP.$EXTENSION" -compose minus_src -composite -type TrueColor "$FILENAME-processed.$EXTENSION"
+        		if [ "$ABS_DELTA" -lt "$DIFF"  ]; then
+                		DIFF=$DELTA
+                		CLOSEST_TEMP=$DARK_TEMP
+        		fi
+    		fi
+	done
+
+	if [ -e "darks/$CLOSEST_TEMP.$EXTENSION" ] ; then
+  	      convert "$FULL_FILENAME" "darks/$CLOSEST_TEMP.$EXTENSION" -compose minus_src -composite -type TrueColor "$FILENAME-processed.$EXTENSION"
+	fi
 fi

scripts/saveImageNight.sh

@@ -22,7 +22,7 @@ mkdir -p images/$CURRENT/thumbnails
 
 # Create image to use (original or processed) for liveview in GUI
 IMAGE_TO_USE="$FULL_FILENAME"
-if [ "$DARK_FRAME_SUBTRACTION" = true ] ; then
+if [ "$DARK_FRAME_SUBTRACTION" = "true" ] ; then
 	IMAGE_TO_USE="$FILENAME-processed.$EXTENSION"
 fi