Meade LX90-10ACF 10" f/10 Catadioptric GoTo Telescope (OTA & Mount Only)

BH #MELX90A10 • MFR #1010-90-03N
Meade LX90-10ACF 10" f/10 Catadioptric GoTo Telescope (OTA & Mount Only)
Key Features
  • 10" (254mm) Catadioptric OTA
  • 2500mm Focal Length, f/10 Focal Ratio
  • Advanced Coma-Free/UHTC Optical Systems
  • Motorized Dual-Tine Alt-Az Fork Mount
Representing the midrange in the series for the perfect combination of power and portability, the Meade Instruments LX90-10ACF 10" f/10 Catadioptric GoTo Telescope provides users with a competent observational platform to view the Moon, planets, and deep-sky objects, all packed into a compact form factor.
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Expected availability: 2-4 weeks

Meade LX90-10ACF 10" f/10 Catadioptric GoTo Telescope (OTA & Mount Only)

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Meade LX90-10ACF Overview

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

Representing the midrange in the series for the perfect combination of power and portability, the Meade Instruments LX90-10ACF 10" f/10 Catadioptric GoTo Telescope provides users with a competent observational platform to view the Moon, planets, and deep-sky objects, all packed into a compact form factor.

It 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. To get users out and observing immediately, Meade includes a low-power eyepiece, a 90° star diagonal, and an 8x50 finderscope. This iteration of the LX90-10ACF is offered here without a tripod for those users who already have a heavy-duty support system or a permanent pier that is capable of carrying it.

Optical Tube Assembly

  • Large 10" (254mm) aperture reveals exceptional lunar and planetary details, while allowing the observation of dimmer deep-sky objects
  • Long 2500mm focal length helps to produce a moderate focal ratio and high magnification potential
  • Advanced Coma-Free catadioptric design yields superior image quality and long effective focal length while maintaining a compact form factor
  • Ultra-High Transmission Coatings (UHTC) system maximizes light transmission through the entire optical path
  • 0.456 arcsec Dawes' Limit resolution enables small objects to be more easily seen while allowing close objects, like binary stars, to be split
  • Single-speed internal focusing mechanism
  • Standard 1.25" SCT screw-in visual back is compatible with the most popular size of eyepieces and accessories

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 to maximize light transmission and limit light loss
  • 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



  • 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
  • OTA and mount only: tripod or permanent pier required for proper use
  • Total weight for mount and OTA: 50 pounds

Included Accessories

  • 1.25"-diameter barrel
  • Accepts most 1.25" astronomical filters
  • 26mm Super Plossl eyepiece produces 96x
  • 52° apparent angle of view
  • 18mm eye relief
  • Fold-down rubber eyecup
  • 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
  • 8x power magnifies the night sky while preserving a wide field of view
  • Large 50mm objective lens allows dimmer reference stars to be visible to provide more alignment star options
  • Illuminated crosshair reticle ensures proper centering without obstructing target
  • Variable-intensity LED illumination
  • Quick release mounting bracket


UPC: 709942999600

Meade LX90-10ACF Specs

Optical DesignAdvanced Coma-Free Catadioptric
Aperture10.0" / 254mm
Focal Length2500mm
Focal Ratiof/10
Eyepiece Barrel Diameter1.25"
Diagonal90° star
1.25" snout and eyepiece holder
Illuminated crosshair reticle
Mount TypeDual-Tine motorized alt-azimuth fork
GoTo CapabilityAudioStar hand controller
Power Source8 x C-cell batteries
Optical Tube DimensionsNot specified by manufacturer
Weight50.0 lb / 22.7.0 kg
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