Celestron's NexStar 4SE 125mm f/13 Maksutov-Cassegrain GoTo Telescope
is a powerful, versatile, and user-friendly catadioptric-style scope
that can be used for observing everything from the Moon and planets to
bright deep-sky objects like stars, galaxies, and nebulae. Using
Celestron's proprietary StarBright XLT multi-coating system, light
transmission is increased throughout the entire optical path with
anti-reflection multi-coated lenses, highly reflective multi-coated
mirrors, and crown optical glass elements. Similar to their Schmidt
cousins, the Maksutov design exchanges the conventional front corrector
plate with a convex meniscus lens, which results in a smaller secondary
mirror—limiting obstruction and increasing contrast, while eliminating
the need for periodic collimation. While the focal ratio is a relatively
slow f/13, the scope's optical performance, added to the mount's
precision tracking system and integrated equatorial wedge, allows it to
be a competent astrophotography/imaging platform for the Moon and
Driving the dual servo motors on the mount is the brain
of the NexStar 4SE: the iconic NexStar+ computer hand controller. Packed
with 40,000+ celestial objects, it can hold up to 100 additional
user-defined destinations and is updatable via the Celestron website. It
has multiple alignment procedures to get you observing fast—including
the super-easy SkyAlign system. Capable of being used in the Northern
or Southern Hemispheres, the NexStar has sidereal, lunar, and solar
tracking speeds to accurately follow near- and deep-sky objects, plus
nine slew speeds and the ability to automatically trigger a camera's
shutter release for Fastar or piggyback wide-field photography or
conventional prime-focus astrophotography.
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