minor update outputdir handling

DTObs.py

@@ -90,7 +90,8 @@ class DTObservationProgram(Ui_mainWindow):
         self.pushButtonStartMeasurement.clicked.connect(self.startMeasurement)
         self.pushButtonStopMeasurement.clicked.connect(self.stopMeasurement)
         self.pushButtonOutputDirectory.clicked.connect(self.selectOutputDirectory)
-
+        self.homedir = os.environ['HOME']
+        self.lineEditOutputDir.setText(self.homedir)
         self.myDT = telescope(setmode='J2000', consoleHost='consoledemo.dmz.camras.nl')
 
         self.threadpool = QThreadPool()
@@ -122,7 +123,7 @@ class DTObservationProgram(Ui_mainWindow):
         Select the output directory to store the measurements
         '''
         dialog = QFileDialog()
-        folder_path = dialog.getExistingDirectory(None, "Select Folder")
+        folder_path = dialog.getExistingDirectory(None, "Select Folder",self.homedir)
         self.lineEditOutputDir.setText(folder_path)