Abstract: A mounting device for mounting an optical sensor to a combustor basket of a combustion gas turbine engine includes a base, an alignment member, and a clamp. The base is mounted over an access hole formed in the combustor basket and is formed with a spherical socket. The alignment member carries the optical sensor and includes a ball that is adjustably received in the socket. During alignment of the alignment member, a laser or other directed light source is applied to the end of the optical sensor. The laser delivers a laser beam that shines out of the optical sensor and permits the alignment member and the optical sensor to be properly aligned. The clamp selectively applies a non-rotational clamping force to the ball of the alignment member to clamp the alignment member in a given orientation with respect to the base.