The NexStar 8SE is one of Celestron’s most popular scopes. A Schmidt-Cassegrain with an 8-inch aperture, it boasts a GoTo mount for automated locating and tracking of celestial objects. This equates to quick alignment and excellent viewing, suitable for an enthusiastic novice and appreciated by a more experienced amateur astronomer. Optical Design Schmidt-Cassegrain Aperture (mm) 203.2 mm (8 in) Focal Length 2032 mm (80 in) Formula:Focal Ratio 10 Focal Length of Eyepiece 1 (mm) 25 mm (0.98 in) Formula:Magnification of Eyepiece 1 81 x Finderscope StarPointer Star Diagonal 1.25" Mount Type Single Fork Arm Altazimuth Tripod Steel (sku 93593) Power Requirements 8-AA batteries (not included) Formula:Highest Useful Magnification 480 x Formula:Lowest Useful Magnification 29 x Formula:Limiting Stellar Magnitude 14 Formula:Resolution (Rayleigh) 0.69 arc seconds Formula:Resolution (Dawes) 0.57 arc seconds Formula:Light Gathering Power (Compared to human eye) 843 x Apparent Field of View 0.63 ° Linear Field of View (@1000 yds) 33 ft (10 m) Secondary Mirror Obstruction 2.5 in (64 mm) Formula:Secondary Mirror Obstruction by Diameter 31% Formula:Secondary Mirror Obstruction by Area 9.77% Optical Coatings Starbright XLT Optical Tube Length 17 in (432 mm) Total Telescope Kit Weight 33 lbs (15 kg) Tripod Weight 9 lbs (4.08 kg) Slew Speeds Nine slew speeds Tracking Rates Sidereal, Solar and Lunar Tracking Modes Alt-Az, EQ North & EQ South Alignment Procedures SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align Communication Ports RS-232 communication port on hand control, Autoguider port, Aux port Computer Hand Control Double line, 16 character Liquid Crystal Display with 19 fiber optic backlit LED buttons Database 40,000 objects, 200 user defined programmable objects. Enhanced information on over 200 objects Warranty 2-year Telescope Warranty
