The Celestron C6 strikes an excellent balance between portability, ease of use, light gathering ability and price. Designed to be an affordable entry-level to mid-level computerized GoTo telescope, the NexStar SLT range are available in the most popular sizes and are loaded with valuable design features. With preassembled, adjustable stainless steel tripods and quick release fork arms and tubes, NexStar SLT telescopes can be set up in a matter of minutes – with no tools required The sturdy but lightweight SLT mount means that these NexStar GoTos love to travel . Using Celestron’s patented SkyAlign technology, 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 . With the NexStar’s ergonomically designed hand control, the user is free to remove the hand control from its holder for remote use or leave it cradled for hands-free operation. With a touch of a button, you can select the object catalog, change the slew speed, view fascinating information about an object or simply know if a desired object is visible in the sky. The mount is powered by 8 AA (user supplied) batteries or an optional AC adaptor ( 18778). The internal battery compartment provides power to the high precision servo motors for rigid low-vibration performance while eliminating cord wrap issues associated with external battery packs. Features: High quality 150mm/6″ aperture Schmidt-Cassegrain optics A fully computerized Altazimuth mount StarPointer finderscope to help with alignment and accurately locating objects Quick-release fork arm mount, optical tube and accessory tray for quick no tool set up Sturdy stainless steel tripod and accessory tray included Good for terrestrial and celestial observing BONUS Astronomy Software download with a 10,000 object database, printable sky maps, and 75 enhanced images Can be used with Celestron’s PWI software Specifications:  Optical Design: Schmidt-Cassegrain Aperture: 150mm (6") Focal Length: 1500mm (59") Focal Ratio: f/10 Focal Length of Eyepiece 1: 20mm (0.78") Magnification of Eyepiece 1: 75x Focal Length of Eyepiece 2: 9mm (0.35") Magnification of Eyepiece 2: 167x Finderscope: StarPointer Star Diagonal: 1.25 Optical Tube: Aluminium Highest Useful Magnification: 354x Lowest Useful Magnification: 21x Limiting Stellar Magnitude: 13.4 Resolution (Rayleigh): 0.93 arc seconds Resolution (Dawes): 0.77 arc seconds Light Gathering Power (Compared to the human eye): 459x Optical Coatings: Fully-Coated Optical Tube Length: 406.4mm Optical Tube Diameter: 181mm Optical Tube Weight: 3.6kg Dovetail: Vixen/CG-5 Dovetail bar Warranty: 2 years Mount Type: Computerised Altitude-Azimuth Single Fork Arm Instrument load capacity: 8 lbs (3.6 kg) Mount Height adjustment range (includes mount and tripod): 762mm - 1270mm (30" - 50") Tripod Leg Diameter: 31.75mm (1.25") Stainless steel Mount Head Weight: 5 lbs (2.3kg) Accessory Tray: Yes Tripod Weight: 5 lbs (2.