diff --git a/pyext/GFitsTableLogCol.i b/pyext/GFitsTableLogCol.i
new file mode 100644
index 0000000..5b212ea
--- /dev/null
+++ b/pyext/GFitsTableLogCol.i
@@ -0,0 +1,75 @@
+/***************************************************************************
+ *  GFitsTableLogCol.i  - FITS table logical column class SWIG definition  *
+ * ----------------------------------------------------------------------- *
+ *  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 GFitsTableLogCol.i
+ * @brief GFitsTableLogCol class SWIG file.
+ * @author J. Knodlseder
+ */
+%{
+/* Put headers and other declarations here that are needed for compilation */
+#include "GFitsTableLogCol.hpp"
+%}
+
+
+/***********************************************************************//**
+ * @class GFitsTableLogCol
+ *
+ * @brief SWIG interface for FITS table logical column
+ ***************************************************************************/
+class GFitsTableLogCol : public GFitsTableCol {
+public:
+    // Constructors and destructors
+    GFitsTableLogCol();
+    GFitsTableLogCol(const std::string& name, const int& length,
+                     const int& size = 1);
+    GFitsTableLogCol(const GFitsTableLogCol& column);
+    virtual ~GFitsTableLogCol();
+
+    // Methods
+    std::string string(const int& row, const int& col = 0);
+    double      real(const int& row, const int& col = 0);
+    int         integer(const int& row, const int& col = 0);
+    char*       data(void);
+    void        set_nullval(const char* value);
+};
+
+
+/***********************************************************************//**
+ * @brief GFitsTableLogCol class extension
+ ***************************************************************************/
+%extend GFitsTableLogCol {
+    char *__str__() {
+        static char str_buffer[1001];
+        std::ostringstream buffer;
+        buffer << *self;
+	    std::string str = buffer.str();
+        strncpy(str_buffer, (char*)str.c_str(), 1001);
+	    str_buffer[1000] = '\0';
+	    return str_buffer;
+    }
+    char get(const int& row) {
+        return (*self)(row);
+    }
+    char get(const int& row, const int& col) {
+        return (*self)(row, col);
+    }
+    void set(const int& row, const char& value) {
+        (*self)(row) = value;
+    }
+    void set(const int& row, const int& col, const char& value) {
+        (*self)(row, col) = value;
+    }
+    GFitsTableLogCol copy() {
+        return (*self);
+    }
+};
diff --git a/pyext/gammalib.i b/pyext/gammalib.i
index aa90f58..92c4023 100755
--- a/pyext/gammalib.i
+++ b/pyext/gammalib.i
@@ -23,6 +23,10 @@
 #include "GResponse.i"
 #include "GLATResponse.i"
 
+/* Observation classes */
+//#include "GObservation.i"
+#include "GLATObservation.i"
+
 /* FITS file class */
 #include "GFits.i"
 #include "GFitsHDU.i"
@@ -35,6 +39,7 @@
 #include "GFitsAsciiTable.i"
 #include "GFitsBinTable.i"
 #include "GFitsTableCol.i"
+#include "GFitsTableLogCol.i"
 #include "GFitsTableDblCol.i"
 #include "GFitsTableFltCol.i"
 #include "GFitsTableLngCol.i"