fbp: Don't limit rotation angle parameters

src/ufo-anka-backproject-task.c

@@ -787,8 +787,8 @@ ufo_anka_backproject_task_class_init (UfoAnkaBackprojectTaskClass *klass)
         g_param_spec_float ("lamino-angle",
                             "Absolute laminogrpahic angle in radians",
                             "Absolute laminogrpahic angle in radians determining the sample tilt",
-                            0.0f,
-                            (float) G_PI / 2,
+                            -G_MAXFLOAT,
+                            G_MAXFLOAT,
                             0.0f,
                             G_PARAM_READWRITE);
 
@@ -796,8 +796,8 @@ ufo_anka_backproject_task_class_init (UfoAnkaBackprojectTaskClass *klass)
         g_param_spec_float ("roll-angle",
                             "Sample angular misalignment to the side (roll) in radians",
                             "Sample angular misalignment to the side (roll) in radians (CW is positive)",
-                            0.0f,
-                            (float) G_PI / 2,
+                            -G_MAXFLOAT,
+                            G_MAXFLOAT,
                             0.0f,
                             G_PARAM_READWRITE);