NEXSTAR 90 SLT COMPUTERIZED CELESTRON

Description Designed to be an affordable entry level to mid-level computerized GoTo telescope, the NexStar SLT refractors, reflectors, and Maks 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! You can see details ofthe lunar surface, Venus and its phases, polar caps on Mars, Jupiter and its four moons, Saturn with its rings plainly visible and much more! Most NexStar SLTs can also be used as a land-based spotting telescope. Intelligent Design Powered by 8 AA ( user supplied) batteries or an optional AC adapter ( # 18778) , these NexStar GoTos love to travel. 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. 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. Celestron’ s Revolutionary SkyAlign 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! NexStar 90SLT - General Features High quality 90mm Maksutov-Cassegrain 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 Includes CD-ROM The SkyX First Light Edition astronomy software which provides education about the sky and printable sky maps NexStar 90SLT - Computerized Mount Features Proven NexStar computer control technology Database allows telescope to locate over 4, 000 celestial objects SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process Flash upgradeable hand control software and motor control units for downloading product updates over the Internet Internal battery compartment to prevent cord wrap during use Auxiliary port for additional accessories such as GPS accessory Includes NSOL telescope control software for basic control of your telescope via computer ( with optional RS-232 cable) Compatible with optional NexRemote telescope control software, for advanced control of your telescope via computer Specification Optical Design Maksutov-Cassegrain Aperture ( mm) 90 mm ( 3.54 in) Focal Length ( mm) 1250 mm ( 49 in) Focal Ratio 14 Eyepiece 1 ( mm) 25 mm ( 0.98 in) Magnification 1 50 x Eyepiece 2 ( mm) 9 mm ( 0.35 in) Magnification 2 139 x Finderscope StarPointer Star Diagonal 1.25 Mount Motorized Altazimuth Accessory Tray No Tool, Quick release Tripod Steel Weight ( lbs) 12 lbs ( 5.44 kg) Highest Useful Magnification 213 x Lowest Useful Magnification 13 x Limiting Stellar Magnitude 12.3 Resolution ( Rayleigh) 1.55 arc seconds Resolution ( Dawes) 1.29 arc seconds Light Gathering Power 165 x Angular Field of View ( deg) 1 ° Linear Field of View ( @ 1000 yds) 53 ft ( 16 m) Optical Coatings Fully-Coated Slew Speeds Nine slew speeds: 3° / sec, 2° / sec, 1° / sec, 64x, 32x, 16x, 8x, 4x, 2x Tracking Rates Sidereal, Solar and Lunar Tracking Modes Alt-Az, EQ North and EQ South Alignment Procedures SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align Computer Hand Control Fully Computerized / Flash Upgradeable Database 4, 000 Object Database GPS Optional SkySync GPS Accessory ( 93969)