His most well known contribution in the field of optics was made in 1941, when he invented the Maksutov telescope which corrected for spherical aberration by placing a corrector lens in front of the primary mirror.
His most well known contribution in the field of optics was made in 1941. He invented the Maksutov telescope. This Maksutov telescope corrected for spherical aberration by. This Maksutov telescope was placing a corrector lens in front of the primary mirror.