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  • Meade LX90-ACF 8"/203mm Catadioptric Telescope

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

52.00 LBS


The Meade Instruments LX90-8ACF 8" f/10 Catadioptric GoTo Telescope utilizes their Advanced Coma Free 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 that 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 boost 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 on-board speaker. Multiple assisted alignment procedures helps to get users observing faster, aided by an on-board 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 and downloaded to the controller, and uploaded to the internet and shared. An aluminum dual-tine alt-az fork mount carries the OTA and runs on eight user-supplied C-cell batteries for off-the-grid observation sessions, and 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 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

Improves 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/moon rise/moon set, Meteor showers; Lunar/solar eclipses, Equinoxes/solstices

SmartDrive 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

Updateable 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

Optical Design: Advanced Coma Free Catadioptric
Aperture: 8.0" / 203.2 mm
Focal Length: 2032 mm
Focal Ratio: f/10
Eyepiece Barrel Diameter: 1.25"
Diagonal: 90° star
1.25" snout and eyepiece holder
Finderscope: 8x50
Illuminated crosshair reticle
Tripod: Adjustable-height stainless steel
Mount Type: Dual-Tine motorized alt-azimuth fork
GO-TO Capability: AudioStar hand controller
Power Source: 8 x C-cell batteries
Weight: OTA/Mount: 33.0 lb / 15.0 kg
Tripod: 25.0 lb / 11.3 kg

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