Maksutov telescope
[ mak-soo-tawf, -tof ]
/ ˈmæk sʊˌtɔf, -ˌtɒf /
noun
a reflecting telescope in which coma and spherical aberration are reduced to a minimum by a combination of a spherical mirror and a meniscus lens placed inside the radius of curvature of the mirror.
Origin of Maksutov telescope
after Russian opticist Dmitriĭ Dmitrievich
Maksutov (1896–1964), who designed such a telescope in 1941