diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6b45fa52f..fe4dda2176 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 #Changelog for the fact-tools
 
+## Version 0.14.1 -- 10.05.2016
+* Bug fix for the calculation of the source position in Monte Carlos:
+  * Corsika, Ceres and FACT-Tools are using different definitions of the Zd/Az coordinate systen. In FACT-Tools 0.14.0 we change to the definition used by Astropy, but a bug was left in the coordinate transformation for MCs. Now this transformation was changed to fit the definition used in Astropy
+* Example XMLs to be used with the tourque/maui grid wrapper, called ERNA (https://github.com/fact-project/erna)
+
 ## Version 0.14.0 -- 03.05.2016
 
 * Bug fix for the calculation of the source position (and position of stars in the camera):
diff --git a/examples/forErna/std_analysis_mc_erna.xml b/examples/forErna/std_analysis_mc_erna.xml
new file mode 100644
index 0000000000..f59e0ce3b7
--- /dev/null
+++ b/examples/forErna/std_analysis_mc_erna.xml
@@ -0,0 +1,81 @@
+<container>
+    <!--
+    This Process contains the standard analysis for FACT, with modifications to be used with the SGE/TORQUE cluster
+    execution tool ERNA (Easy RuN Access) https://github.com/fact-project/erna
+    -->
+    <properties url="classpath:/default/settings_mc.properties" />
+
+    <property name="integralGainFile" value="classpath:/default/defaultIntegralGains.csv" />
+
+    <service id="calibService" class="fact.calibrationservice.ConstantCalibService" />
+
+    <!-- Has to be a  FactFileListMultiStream in order to work on tasks from gridmap and the executor script.-->
+    <stream id="fact" class="fact.io.FactFileListMultiStream"   url="${input}">
+        <stream class="fact.io.zfits.ZFitsStream" id="_" />
+    </stream>
+
+    <process id="1" input="fact">
+
+        <fact.utils.Remapping
+                key="Data"
+                outputKey="Data"
+        />
+        <fact.utils.RemappingKeys
+                keys="McCherPhotWeight,McCherPhotNumber,McMuonCherPhotWeight,McNoisePhotWeight,McCherArrTimeMean,McCherArrTimeVar,McCherArrTimeMin,McCherArrTimeMax"
+        />
+
+        <fact.datacorrection.DrsCalibration
+                key="Data"
+                outputKey="DataCalibrated"
+        />
+
+        <fact.datacorrection.RemoveSpikes
+                dataKey="DataCalibrated"
+                outputKey="DataCalibrated"
+                startCellKey="StartCellData"
+                leftBorder="${removeSpikes_leftBorder}"
+                spikeLimit="${removeSpikes_spikeLimit}"
+                topSlopeLimit="${removeSpikes_topSlopeLimit}"
+                maxSpikeLength="${removeSpikes_maxSpikeLength}"
+        />
+        <fact.datacorrection.InterpolateTimeSeries
+                calibService="calibService"
+                dataKey="DataCalibrated"
+                dataOutputKey="DataCalibrated"
+        />
+
+        <!-- Extraction -->
+        <!-- BasicExtraction, RisingEdgeForPositions, RisingEdgePolynomFit, TimeOverThreshold,
+        PhotonChargeTimeOverThreshold, HandleSaturation, CorrectPixelDelays-->
+        <include url="classpath:/default/mc/extraction_mc.xml" />
+        <!-- Output: photoncharge, arrivalTime -->
+
+        <!-- Cleaning -->
+        <!-- SourcePosition(Cetatauri), CoreNeighborCleanTimeNeighbor-->
+        <include url="classpath:/default/mc/cleaning_mc.xml" />
+        <!-- Output: shower -->
+
+        <!-- Parameter calculation (only source independent) -->
+        <!-- ArrayMean(photoncharge,arrivalTime), ArrayStatistics(photoncharge,arrivalTime,maxSlopes,
+        arrivalTimePos,maxSlopesPos,maxAmplitudePosition,photonchargeSaturated,arrivalTimeTOT),
+        Size, DistributionFromShower, M3Long, Length, Width, NumberOfIslands, TimeGraident,
+        Concentration, ConcentrationCore, ConcentrationAtCenterOfGravity, Leakage, TimeSpread,
+        ShowerSlope, Disp -->
+        <include url="classpath:/default/mc/parameterCalc_mc.xml" />
+        <!-- Output: source independent parameters -->
+
+        <!-- Parameter calculation (only source dependent) -->
+        <!-- SourcePosition(${sourcename}), AntiSourcePosition(5), Alpha(for 6 Sources),
+        Distance(for 6 Sources), CosDeltaAlpha(for 6 Sources), Theta(for 6 Sources) -->
+        <include url="classpath:/default/mc/sourceParameter_mc.xml" />
+        <!-- Output: source dependent parameters -->
+
+        <!-- its important that you output a valid json file for this to work in conjuction with gridmap -->
+	<fact.io.JSONWriter keys="${keysForOutput}" 
+		url="${output}" 
+		writeListOfItems="True" 
+		pixelSetsAsInt="True"
+		/>
+	<!-- <fact.io.PrintKeysOnConsole keys="${keysForOutput}" /> -->
+    </process>
+</container>
diff --git a/pom.xml b/pom.xml
index 2cf21b83cc..7c5c375699 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>de.sfb876</groupId>
   <artifactId>fact-tools</artifactId>
   <name>fact-tools</name>
-  <version>0.14.0</version>
+  <version>0.14.1</version>
   <url>http://sfb876.de/fact-tools/</url>
 
 	<description>
diff --git a/src/main/java/fact/features/source/SourcePosition.java b/src/main/java/fact/features/source/SourcePosition.java
index fff0c29158..30d842487c 100644
--- a/src/main/java/fact/features/source/SourcePosition.java
+++ b/src/main/java/fact/features/source/SourcePosition.java
@@ -175,10 +175,10 @@ public Data process(Data data) {
         	double pointingAz = Utils.valueToDouble(data.get(pointingAzKey));
         	double sourceZd = Utils.valueToDouble(data.get(sourceZdKey));
         	double sourceAz = Utils.valueToDouble(data.get(sourceAzKey));
-        	// Due to the fact, that Ceres handle the coordinate in a different way, we have to undo
-        	// the coordinate transformation from Ceres
-        	pointingAz = 180 - pointingAz;
-        	sourceAz = 180 - sourceAz;
+        	// Due to the fact, that Ceres handle the coordinate in a different way, we have to
+        	// rotate the coordinate system by 180 deg such that 0 deg is north
+        	pointingAz = 180 + pointingAz;
+        	sourceAz = 180 + sourceAz;
         	// Now we can calculate the source position from the zd,az coordinates for pointing and source
         	double[] sourcePosition = getSourcePosition(pointingAz, pointingZd, sourceAz, sourceZd);
         	data.put(outputKey, sourcePosition);