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Celestron NexStar 90SLT 90mm f/14 Maksutov-Cassegrain GoTo TelescopeDesigned 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 mirrorlimiting 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.
Optical Tube90mm aperturef/14 focal ratio1250mm focal lengthMaksutov-Cassegrain optical designFront convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberration) across the entire field of viewCompared to Schmidt-Cassegrains, a smaller secondary mirror reduces obstructions and increases contrastFully coated optics improve light transmission, color rendition, and contrastResolution: 1.55 arcsec (Rayleigh); 1.29 arcsec (Dawes)Internal focusing systemVixen-style dovetail plate
NexStar Controller4000+ object database99 customizable user-defined objectsExpanded information on over 200 most popular objects including history, facts, and mythologyTracking rates: Sidereal, Solar, LunarNine slew speeds: 2x, 4x, 8x, 16x, 32x, 64x, 1/sec, 2/sec, 3/secAnti-backlash compensation trains out the intrinsic play between gears to improve GoTo and tracking accuracyAlignment procedures: Sky Align, Auto 2-star, 1-star, 2-star, Solar systemSkyAlign allows fast and easy alignment without having to polar align or even know the names of starsTour mode: Seeks out the best objects and automatically slews to themConstellation Tour: Tour of the best objects within a specific constellationIdentify mode: Searches the database catalogs or lists and displays the name and offset distances to the nearest matching objectFlash upgradeable via Internet2-line/16-character LCD display with 19 backlit LED buttonsRS-232 communication port for updating or computer control
Database Details:Solar system: Includes planets, Moon, and SunConstellations50 named deep-sky objectsStars: Select list of SAO catalog including named stars, asterisms, variable stars, double starsAbell catalogIC catalogCaldwell catalogComplete Messier catalogSelect objects from the NGC catalog
Mount and TripodMount:Single-arm fork designDual-axis DC servo motorsOptical encoders on motors improve GoTo and tracking accuracy; up to 0.26 arcsec accuracyInternal battery compartment to prevent cord wrap during useHand control and motors are powered by eight user-supplied AA batteries or optional 12 VAC adapterNo-tool setup, complete quick release setup and breakdownTripod:Sturdy stainless steelAdjustable height accommodates a variety of users and observation positionsSpiked feet improve stability on soft or uneven groundMovable hand controller holder prevents cord wrap during long-duration observation and astrophotography sessionsTray holds accessories like eyepieces, filters, phones, and flashlights
Included AccessoriesEyepieces:1.25″-diameter barrelAccepts most 1.25″ astronomical filters9mm focal length produces 139x power25mm focal length yields 50x powerDiagonal:Eyepiece holder accepts most 1.25″ eyepieces and accessories90 angle places head at a comfortable viewing angleStar diagonal corrects image horizontally, but not verticallyFinder:Unmagnified to ensure a wide field of view for finding alignment stars easilyReticle won’t obstruct small objectsVariable-intensity LED protects night-adjusted vision
Software:NSOL Telescope Control Software: Provides basic telescope control via computer with optional RS-232 cable
90mm Maksutov-Cassegrain OTA1250mm Focal Length, f/14 Focal RatioSingle-Arm Motorized Alt-Az MountFully Multi-Coated Optics
Box ContentsCelestron NexStar 90SLT 90mm f/14 Maksutov-Cassegrain GoTo TelescopeCelestron StarPointer Finderscope9mm Eyepiece25mm Eyepiece90 Star DiagonalComputer Hand ControllerStainless Steel Tripod with Tray”The Sky X” Astronomy SoftwareNSOL Telescope Control SoftwareLimited 2-Year WarrantyEx-display all as new never used slight tatty box As a fully VAT registered company we will supply you with a full VAT Invoice PRICE INC. VAT and have 24 Month Limited Warranty
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Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Swindon