Meade LX90-8ACF 8" f/10 Catadioptric GoTo Telescope

BH #MELX90ACF8Q • MFR #0810-90-03
Meade
Meade LX90-8ACF 8" f/10 Catadioptric GoTo Telescope
Key Features
  • 8" (203mm) Catadioptric OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • Advanced Coma-Free/UHTC Optical Systems
  • Motorized Dual-Tine Alt-Az Fork Mount
The Meade Instruments LX90-8ACF 8" f/10 Catadioptric GoTo Telescope utilizes their Advanced Coma-Free (ACF) catadioptric light path to reduce color fringing and off-axis comas to enable it to clearly resolve dim deep-sky objects and easily split binary stars with tack-sharp clarity. Complementing the ACF system is their Ultra-High Transmission Coatings (UHTC) system, which improves light transmission through the entire light path across the whole visible spectrum. A combination of high-transmittance lens coatings and highly reflective mirror coatings boosts image brightness while minimizing internal and external light loss and diffraction.
Back-Ordered
$1,799.00
Sales and export of this item to South Korea are prohibited.
Patrick F., B&H Optics Expert

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Meade LX90-8ACF Overview

  • 1Description
  • 2Optical Tube Assembly
  • 3Optical Technologies
  • 4AudioStar GoTo Computer Hand Controller
  • 5Mount and Tripod
  • 6Included Accessories

The Meade Instruments LX90-8ACF 8" f/10 Catadioptric GoTo Telescope utilizes their Advanced Coma-Free (ACF) catadioptric light path to reduce color fringing and off-axis comas to enable it to clearly resolve dim deep-sky objects and easily split binary stars with tack-sharp clarity. Complementing the ACF system is their Ultra-High Transmission Coatings (UHTC) system, which improves light transmission through the entire light path across the whole visible spectrum. A combination of high-transmittance lens coatings and highly reflective mirror coatings boosts image brightness while minimizing internal and external light loss and diffraction.

The next generation of their iconic GoTo system, the AudioStar hand controller, is packed with over 30,000 objects and features audio commentary on select celestial objects to give users information, history, and mythology through its onboard speaker. Multiple assisted alignment procedures help to get users observing faster, aided by an onboard 16-channel GPS module for precise setup and alignment. There is also an option for guided tours to be generated by the AudioStar, or to be custom-made by the user, downloaded to the controller, and uploaded to the internet and shared.

An aluminum dual-tine alt-az fork mount carries the optical tube assembly (OTA) and runs on eight user-supplied C-cell batteries for off-the-grid observation sessions. Supporting the entire system is an adjustable-height stainless steel tripod. To get users out and observing immediately, Meade includes a low-power eyepiece, a 90° star diagonal, and an 8x50 finderscope. Powerful, portable, and versatile, this 8" iteration of the LX90 can be easily transported to remote locations to reveal the wonders of the universe.

Optical Tube Assembly

  • 8" (203.2mm) aperture
  • f/10 focal ratio
  • 2032mm focal length
  • Advanced Coma-Free catadioptric design
  • Ultra-High Transmission Coatings (UHTC) system
  • Resolution: 0.57 arcsec, Dawes' Limit
  • Secondary mirror obstruction: 13.7%, by area
  • Single-speed internal focusing mechanism
  • 1.25" SCT screw-in visual back

Optical Technologies

  • Advanced Coma-Free System:
  • Reduces off-axis comas and astigmatism for sharper images
  • Eliminates diffraction spikes for better resolution
  • Aplanatic design produces flat, distortion-free images across the field of view—especially at the edges
  • Ultra-High Transmission Coatings (UHTC):
  • All corrector plate and mirror surfaces are fully multi-coated
  • Engineered to optimize visual, photographic, and CCD imaging
  • Improve light transmission across the entire visible spectrum through the optical path
  • Corrector plate coatings made up of multiple layers of aluminum oxide (Al2O3), titanium dioxide (TiO2), and magnesium fluoride (MgF2)
  • Mirror coatings consist of aluminum with multi-layer coatings of titanium dioxide (TiO2) and silicon dioxide (SiO2)

AudioStar GoTo Computer Hand Controller

  • Two-line LED display
  • Twenty-key alphanumeric keypad, red LED backlight
  • 68HC11, 8MHz processor
  • Built-in red utility light
  • 30,000+ object database
  • User-friendly menu-driven system navigation
  • Slew speeds: 1x, 2x, 8x, 16x, 64x, 128x sidereal; 1.5°/sec, 3°/sec, 6.5°/sec, max
  • Tracking rates: Sidereal, Lunar, Custom (select from 2000 incremental rates)
  • Assisted alignment procedures: Easy (Two-Star), One-Star, Two-Star
  • Customizable guided tours for specific day, time, and location
  • Astronomer Inside: Built-in speaker provides over 5 hours of audio commentary on over 500 objects including scientific data and history
  • Projects events to plan future astronomy sessions such as sunrise/sunsets, Moon phases/moonrise/moonset, meteor showers; lunar/solar eclipses, equinoxes/solstices
  • Smart Drive Permanent Periodic Error Correction (PPEC) allows system to learn tracking errors and continually improve tracking over time
  • Backlash compensation allows user to train out the intrinsic play between gears to improve GoTo and tracking accuracy
  • Powered by mount to be lighter and easier to use
  • 24" coiled cord
  • Updatable via Internet, and remote computer control of the mount, using RS-232 port
  • Database objects:
  • Solar system, including Moon, Sun, planets
  • Comets and asteroids
  • 88 major constellations
  • Popular named objects
  • Galaxies, quasars, and nebulae
  • Multiple catalogs including Messier, Caldwell, and NGC
  • Stars, including named stars, SAO catalog, double stars, variable stars
  • Satellites, including the International Space Station (ISS) and Hubble Space Telescope (HST)
  • User-defined astronomical and terrestrial objects
  • Dimensions:
  • Length: 6.6" (17cm)
  • Width, top: 3.2" (80cm)
  • Width, bottom: 2.25" (57cm)
  • Depth: 0.8" (21cm)
  • Weight: 17.9 oz (508g)

Mount and Tripod

  • Mount:
  • Aluminum motorized dual-tine alt-azimuth fork
  • Integrated 16-channel GPS module obtains accurate day, time, location information without requiring user input
  • Large 4.875" worm gears
  • Dual-axis mechanical locks allow adjustment without power
  • Adjustable hand controller holder keeps AudioStar safe while avoiding cord-wrap
  • Runs on eight user-supplied C-cell batteries; 60-hour max runtime
  • Tripod:
  • Stainless steel legs provide a solid platform with limited vibrations
  • Adjustable height of 34-54" accommodates a variety of users and viewing positions
  • Center tray holds accessories and eyepieces, while acting as a stabilizer for the legs to improve stability and limit vibrations
  • Spiked feet provide improved stability on soft or uneven ground
  • Weight: 25 pounds

Included Accessories

  • Eyepiece:
  • 1.25"-diameter barrel
  • Accepts most 1.25" astronomical filters
  • 26mm Super Plossl eyepiece produces 78x
  • 52° apparent angle of view
  • 18mm eye relief
  • Fold-down rubber eyecup
  • Diagonal:
  • 1.25" snout and eyepiece holder
  • 90° angle places head in a comfortable viewing position, especially when OTA is pointed at or near the zenith
  • Star configuration corrects images horizontally, but not vertically
  • Finder:
  • 8x50 configuration
  • Low magnification provides a wide field of view for easier object finding
  • Large aperture reveals many objects smaller finders can't
  • Illuminated crosshair reticle ensures proper centering without obstructing target
  • Variable-intensity LED illumination
  • Quick release mounting bracket
UPC: 709942370508

Meade LX90-8ACF Specs

Optical Tube Assembly
Optical DesignSchmidt Cassegrain
Aperture203 mm / 8"
Focal Length2032 mm
Focal Ratiof/10
FocuserSingle-Speed Internal
Eyepiece Barrel Diameter1.25"
Diagonal90° Star
FinderscopeYes
Mount
TypeMotorized; Alt-Azimuth Dual Fork
GoTo CapabilityYes, AudioStar
Tripod
TypeAdjustable
Material of TripodStainless Steel
General
Batteries8 x C
GPSYes, 16 Channels
Wi-FiNo
Weight33.0 lb / 15.0 kg (Fully Assembled)
25.0 lb / 11.3 kg (Tripod)
Packaging Info
Package Weight69.95 lb
Box Dimensions (LxWxH)39 x 35 x 14"
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