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Celestron's NexStar 8 SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope is a powerful, versatile and user-friendly Schmidt-Cassegrain style telescope that can be used for observing everything from the Moon and planets to deep sky objects like galaxies and nebulae. Using Celestron's improved 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 4-element rare-earth glass. While the focal ratio is a slow f/10, the scope's precision tracking system allows it to be a competent astrophotography/astroimaging platform for the Moon and planets.
Driving the dual servo motors on the mount is the brains of the NexStar 8: the iconic NexStar computer hand controller. Packed with over 40,000 celestial objects, it can hold up to 200 additional user-defined destinations and is updateable 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.
Large 203mm (8") aperture
f/10 focal ratio
2032mm focal length
StarBright XLT Optical Coatings:
Multi-layer mirror coatings made from layers of aluminum, SiO2 (quartz), TiO2 (titanium dioxide), and Si02 (silicon dioxide)
Reflectivity is flat across the light spectrum, for both astrophotography/astroimaging and visual observation
Multi-layer anti-reflective coatings made from layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide)
High-transmission water white glass corrector lens with 97.4% light transmission
Rayleigh: 0.69 arcsec
Dawes: 0.57 arcsec
Secondary Mirror Obstruction: 2.5" (6.4cm)
NexStar Computer Controller
Two-line, 16 character LCD display
19 fiber optic backlit red LED buttons
Database of over 40,000 celestial objects plus 200 user-defined
Automatically slew to planets, and objects in a variety of catalogs, including the Messier, NGC, Caldwell, and SAO brightest stars
Tour Mode: Shows a selection of the most popular objects for the time and date you are observing
Pre-programmed alignment systems including SkyAlign, Auto 2-Star, 1-Star, 2-Star, and Solar System for fast and easy set up
Alignment takes minutes, with minimal effort or experience
Enter day, time, and location
Point the telescope at three bright objects in the sky, and the telescope does the rest
No need to point it North or to perfectly level the scope
Pre-set sidereal, solar, and lunar slew speeds for observing the fast-moving Moon, to slower-moving deep space subjects
Manually set slew speed at 1, 2, or 3 degrees per second, or choose speeds as low as 2x or as high as 64x
RS-232 communication port allows for computer control
Flash updateable via the Celestron website
Mount and Tripod
Single fork alt-az
Dual servo motors allow for precise tracking with virtually no vibration
Adjustable from 28-48"
Weight: 9 pounds
Folded Size: 8x28"
Requires no tools to set up or break down
25mm focal length yields 81x magnification
1.25" diameter barrel accept most filters
Anti-reflection multicoated glass
Fold down rubber eyecups for use with or without eyeglasses
90° angle puts head in a comfortable viewing position when scope is pointed at or near the zenith
Star diagonal leaves horizontal view uncorrected
Un-magnified to make finding objects faster and easier
Used primarily for alignment process
Projects a single red dot in line of sight
In the Box
Celestron NexStar 8 SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope