diff --git a/include/GLATObservation.hpp b/include/GLATObservation.hpp
index c2022dc..cc69b01 100644
--- a/include/GLATObservation.hpp
+++ b/include/GLATObservation.hpp
@@ -21,6 +21,7 @@
 
 /* __ Includes ___________________________________________________________ */
 #include "GObservation.hpp"
+#include "GFits.hpp"
 
 /* __ Namespaces _________________________________________________________ */
 
@@ -35,24 +36,30 @@ class GLATObservation : public GObservation {
 public:
     // Constructors and destructors
     GLATObservation();
+    GLATObservation(const std::string& ft1name, const std::string& ft2name);
     GLATObservation(const GLATObservation& obs);
     virtual ~GLATObservation();
 
     // Operators
-    virtual GLATObservation& operator= (const GLATObservation& obs);
+    GLATObservation& operator= (const GLATObservation& obs);
 
     // Methods
+    GFits* ft1(void) const;
+    GFits* ft2(void) const;
   
 protected:
     // Protected methods
-    void    init_members(void);
-    void    copy_members(const GLATObservation& obs);
-    void    free_members(void);
-    virtual GLATObservation* clone(void) const;
+    void             init_members(void);
+    void             copy_members(const GLATObservation& obs);
+    void             free_members(void);
+    GLATObservation* clone(void) const;
 
     // Protected data area
 
 private:
+    GFits* m_ft1;     //!< FT1 FITS file
+    GFits* m_ft2;     //!< FT2 FITS file
+    GFits* m_ltcube;  //!< Lifetime cube FITS file
 };
 
 #endif /* GLATOBSERVATION_HPP */
diff --git a/include/Makefile.am b/include/Makefile.am
index 90f8df3..192b5e7 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -17,6 +17,7 @@ pkginclude_HEADERS = GammaLib.hpp \
 		     GFitsAsciiTable.hpp \
 		     GFitsBinTable.hpp \
 		     GFitsTableCol.hpp \
+		     GFitsTableLogCol.hpp \
 		     GFitsTableStrCol.hpp \
 		     GFitsTableShtCol.hpp \
 		     GFitsTableLngCol.hpp \
diff --git a/include/Makefile.in b/include/Makefile.in
index 44a41fa..023ed14 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -123,6 +123,7 @@ pkginclude_HEADERS = GammaLib.hpp \
 		     GFitsAsciiTable.hpp \
 		     GFitsBinTable.hpp \
 		     GFitsTableCol.hpp \
+		     GFitsTableLogCol.hpp \
 		     GFitsTableStrCol.hpp \
 		     GFitsTableShtCol.hpp \
 		     GFitsTableLngCol.hpp \
diff --git a/pyext/GLATObservation.i b/pyext/GLATObservation.i
new file mode 100644
index 0000000..1578790
--- /dev/null
+++ b/pyext/GLATObservation.i
@@ -0,0 +1,43 @@
+/***************************************************************************
+ *        GLATObservation.i  -  LAT Observation class SWIG interface       *
+ * ----------------------------------------------------------------------- *
+ *  copyright            : (C) 2008 by Jurgen Knodlseder                   *
+ * ----------------------------------------------------------------------- *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+/**
+ * @file GLATObservation.i
+ * @brief GLATObservation class SWIG file.
+ * @author J. Knodlseder
+ */
+%{
+/* Put headers and other declarations here that are needed for compilation */
+#include "GLATObservation.hpp"
+%}
+%include stl.i
+%feature("notabstract") GLATObservation;
+%import GObservation.i
+
+/***********************************************************************//**
+ * @class GLATObservation
+ *
+ * @brief Interface for the LAT observation classes.
+ ***************************************************************************/
+class GLATObservation : public GObservation {
+public:
+    // Constructors and destructors
+    GLATObservation();
+    GLATObservation(const std::string& ft1name, const std::string& ft2name);
+    GLATObservation(const GLATObservation& obs);
+    virtual ~GLATObservation();
+
+    // Methods
+    GFits* ft1(void) const;
+    GFits* ft2(void) const;
+};
+
diff --git a/src/Makefile.am b/src/Makefile.am
index 89a2f70..be3e35a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -30,6 +30,7 @@ files = GException.cpp \
 	fits/GFitsAsciiTable.cpp \
 	fits/GFitsBinTable.cpp \
 	fits/GFitsTableCol.cpp \
+	fits/GFitsTableLogCol.cpp \
 	fits/GFitsTableStrCol.cpp \
 	fits/GFitsTableShtCol.cpp \
 	fits/GFitsTableLngCol.cpp \
diff --git a/src/Makefile.in b/src/Makefile.in
index 84889cb..b0d7e01 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -135,6 +135,7 @@ files = GException.cpp \
 	fits/GFitsAsciiTable.cpp \
 	fits/GFitsBinTable.cpp \
 	fits/GFitsTableCol.cpp \
+	fits/GFitsTableLogCol.cpp \
 	fits/GFitsTableStrCol.cpp \
 	fits/GFitsTableShtCol.cpp \
 	fits/GFitsTableLngCol.cpp \
@@ -169,10 +170,11 @@ am__objects_1 = GException.lo GTools.lo GSkyDir.lo GNodeArray.lo \
 	GLATObservation.lo GFitsHeaderCard.lo GFitsHeader.lo \
 	GFitsData.lo GFitsImage.lo GFitsDblImage.lo GFitsTable.lo \
 	GFitsAsciiTable.lo GFitsBinTable.lo GFitsTableCol.lo \
-	GFitsTableStrCol.lo GFitsTableShtCol.lo GFitsTableLngCol.lo \
-	GFitsTableFltCol.lo GFitsTableDblCol.lo GFitsHDU.lo GFits.lo \
-	GFitPar.lo GVector.lo GMatrixBase.lo GMatrix.lo GSymMatrix.lo \
-	GSparseMatrix.lo GSparseSymbolic.lo GSparseNumeric.lo
+	GFitsTableLogCol.lo GFitsTableStrCol.lo GFitsTableShtCol.lo \
+	GFitsTableLngCol.lo GFitsTableFltCol.lo GFitsTableDblCol.lo \
+	GFitsHDU.lo GFits.lo GFitPar.lo GVector.lo GMatrixBase.lo \
+	GMatrix.lo GSymMatrix.lo GSparseMatrix.lo GSparseSymbolic.lo \
+	GSparseNumeric.lo
 am_libgamma_la_OBJECTS = $(am__objects_1)
 libgamma_la_OBJECTS = $(am_libgamma_la_OBJECTS)
 
@@ -251,6 +253,7 @@ GFitsTable.lo: fits/GFitsTable.cpp
 GFitsAsciiTable.lo: fits/GFitsAsciiTable.cpp
 GFitsBinTable.lo: fits/GFitsBinTable.cpp
 GFitsTableCol.lo: fits/GFitsTableCol.cpp
+GFitsTableLogCol.lo: fits/GFitsTableLogCol.cpp
 GFitsTableStrCol.lo: fits/GFitsTableStrCol.cpp
 GFitsTableShtCol.lo: fits/GFitsTableShtCol.cpp
 GFitsTableLngCol.lo: fits/GFitsTableLngCol.cpp
@@ -446,6 +449,15 @@ GFitsTableCol.obj: fits/GFitsTableCol.cpp
 GFitsTableCol.lo: fits/GFitsTableCol.cpp
 	$(LIBTOOL) --mode=compile $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o GFitsTableCol.lo `test -f 'fits/GFitsTableCol.cpp' || echo '$(srcdir)/'`fits/GFitsTableCol.cpp
 
+GFitsTableLogCol.o: fits/GFitsTableLogCol.cpp
+	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o GFitsTableLogCol.o `test -f 'fits/GFitsTableLogCol.cpp' || echo '$(srcdir)/'`fits/GFitsTableLogCol.cpp
+
+GFitsTableLogCol.obj: fits/GFitsTableLogCol.cpp
+	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o GFitsTableLogCol.obj `cygpath -w fits/GFitsTableLogCol.cpp`
+
+GFitsTableLogCol.lo: fits/GFitsTableLogCol.cpp
+	$(LIBTOOL) --mode=compile $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o GFitsTableLogCol.lo `test -f 'fits/GFitsTableLogCol.cpp' || echo '$(srcdir)/'`fits/GFitsTableLogCol.cpp
+
 GFitsTableStrCol.o: fits/GFitsTableStrCol.cpp
 	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o GFitsTableStrCol.o `test -f 'fits/GFitsTableStrCol.cpp' || echo '$(srcdir)/'`fits/GFitsTableStrCol.cpp
 
diff --git a/src/obs/GLATObservation.cpp b/src/obs/GLATObservation.cpp
index 96b9cde..b3ed9cf 100644
--- a/src/obs/GLATObservation.cpp
+++ b/src/obs/GLATObservation.cpp
@@ -54,6 +54,31 @@ GLATObservation::GLATObservation() : GObservation()
 
 
 /***********************************************************************//**
+ * @brief Constructor
+ *
+ * @param[in] ft1name FT1 FITS filename.
+ * @param[in] ft2name FT2 FITS filename.
+ ***************************************************************************/
+GLATObservation::GLATObservation(const std::string& ft1name, 
+                                 const std::string& ft2name) : GObservation()
+{
+    // Initialise class members for clean destruction
+    init_members();
+    
+    // Allocate FT1 & FT2 FITS files
+    m_ft1 = new GFits;
+    m_ft2 = new GFits;
+    
+    // Open FT1 & FT2 FITS files
+    m_ft1->open(ft1name);
+    m_ft2->open(ft2name);
+
+    // Return
+    return;
+}
+
+
+/***********************************************************************//**
  * @brief Copy constructor
  *
  * @param[in] obs Observation from which the instance should be built.
@@ -125,6 +150,25 @@ GLATObservation& GLATObservation::operator= (const GLATObservation& obs)
  =                                                                         =
  ==========================================================================*/
 
+/***********************************************************************//**
+ * @brief Return pointer to FT1 file.
+ ***************************************************************************/
+GFits* GLATObservation::ft1(void) const
+{
+    // Return FT1 pointer
+    return m_ft1;
+}
+
+
+/***********************************************************************//**
+ * @brief Return pointer to FT2 file.
+ ***************************************************************************/
+GFits* GLATObservation::ft2(void) const
+{
+    // Return FT2 pointer
+    return m_ft2;
+}
+
 
 /*==========================================================================
  =                                                                         =
@@ -138,6 +182,9 @@ GLATObservation& GLATObservation::operator= (const GLATObservation& obs)
 void GLATObservation::init_members(void)
 {
     // Initialise members
+    m_ft1    = NULL;
+    m_ft2    = NULL;
+    m_ltcube = NULL;
 
     // Return
     return;
@@ -164,6 +211,14 @@ void GLATObservation::copy_members(const GLATObservation& obs)
 void GLATObservation::free_members(void)
 {
     // Free members
+    if (m_ft1    != NULL) delete m_ft1;
+    if (m_ft2    != NULL) delete m_ft2;
+    if (m_ltcube != NULL) delete m_ltcube;
+
+    // Mark memory as free
+    m_ft1    = NULL;
+    m_ft2    = NULL;
+    m_ltcube = NULL;
 
     // Return
     return;