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Designed as a highly portable and user-friendly entry- to mid-level astronomical observation platform, the Celestron NexStar 90SLT 90mm f/14 Maksutov-Cassegrain GoTo Telescope
gives you the ability to make detailed observations of the Moon, with
the ability to easily see planets and reach outside the solar system to
resolve bright deep-space objects like galaxies, nebulae, and binary or
variables stars. The compact and powerful Maksutov-Cassegrain design
uses a front corrector plate with a convex meniscus lens to correct
off-axis aberrations, like comas, and chromatic aberration to produce
images with true color rendition. The nature of the lens results in a
smaller secondary mirror—limiting obstruction and increasing contrast,
while eliminating the need for periodic collimation.
The brain of
the NexStar SLT is the venerable NexStar computer controller. Equipped
with a database of over 4000 objects, including the planets, stars,
nebulae, galaxies, and the complete Messier catalog, it can also be
programmed with up to 99 custom user-defined objects and filters for
custom object lists. Its intuitive menu-driven user interface provides
the power to observe the heavens with nine slew speeds and three
tracking rates, plus anti-backlash compensation. Features such as guided
tours, extended information on 200 popular objects, and multiple
assisted alignment procedures make the NexStar controller easy to use
and invaluable to new users and experienced stargazers.
Using Celestron’s patented SkyAlign (patent pending), simply input the date, time and location into the hand control then slew the telescope to any three bright celestial objects in the sky. You do not need to know the names of the stars – you can even pick the Moon or bright planets!