Maksutov-Cassegrains are very similar to Schmidt-Cassegrains, but rather they use convex meniscus lenses in replacement of corrector plates. The main advantage here compared to other similar models is that Maksutov-Cassegrains don't need periodic collimation as many other telescopic models do. In addition, because mirror obstruction is smaller, images appear with greater contrasts, but will have a narrower field of view due to the Maksutov-Cassegrain's slow focal ratio which tends to make this telescope design better for planetary and double star observing.
The NexStar 90SLT Maksutov-Cassegrain Computerized Telescope is an excellent beginner scope for planetary observing. Maksutov-Cassegrains use a meniscus lens, causing them to have a very slow focal ratio.... Learn MoreFREE SHIPPINGModel#: CEL-22087(48 States)
Designed to be an affordable entry level to mid-level computerized GoTo telescope, the NexStar SLT refractors, reflectors, and Maks are available in the most popular sizes and are loaded with valuable design features... Learn MoreFREE SHIPPINGModel#: CEL-22097(48 States)