User manual
Meade LX90-10ACF 10" f 10 Cassegrain

User Manual for Meade LX90-10ACF 10" f 10 Cassegrain GoTo Telescope Kit with Case

• Product category: Catadioptrics (Cassegrains) Meade
• Brand: Meade
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Meade Catadioptrics (Cassegrains)

Product description

• Meade LX90-10ACF 10" f/10 Catadioptric GoTo Telescope 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 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 10" iteration of the LX90 can be broken down for transport to remote locations to reveal the wonders of the universe.
  Optical Tube Assembly
  • • 10" (254mm) aperture
    • f/10 focal ratio
    • 2500mm focal length
    • Advanced Coma-Free catadioptric design
    • Ultra-High Transmission Coatings (UHTC) system
    • Resolution: 0.456 arcsec, Dawes' Limit
    • 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 96x
    • 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: 709942370522
• JMI Telescopes CASELX10 Telescope Carrying Case The JMI CASELX10 Telescope Carrying Case (Black) is a molded ABS plastic case with die-cut foam lining and compartments for telescope, eyepieces, finder scope and accessories. The case is designed to carry Meade LX50 10", LX90 10", LX90GPS 10", LX100 10", LX200 10" (non-GPS), LX200GPS 10", LX200R 10" telescopes that have the ability to be stowed with the nose facing down. If your scope must be stowed with the nose up, it will not fit in this case. To fit properly in the case, the finder scope must be removed from the telescope and placed in a foam compartment. The lid has a 3.0 x 30" steel hinge and four lockable latches. The case can be transported by three steel-reinforced handles or the built-in wheels.
  Construction
  • • Molded ABS plastic with die-cut foam lining and compartments for telescope, eyepieces, finder scope and accessories
    • Four lockable latches
    • 3.0 x 30" steel hinge
    • The three-point automatic-repositioning quick-release bracket allows the Meade LX90 LNT Module with SmartFinder to be removed and placed in the carrying case without losing positioning
  Carrying options
  • • Three steel-reinforced handles
    • Built-in wheels
  Compatible with
  • • For use only with models that can be stored with the nose down between the mount forks
    • Meade LX50 10", LX90 10", LX90GPS 10", LX100 10", LX200 10" (non-GPS), LX200GPS 10", LX200R 10" telescopes
    • The following fork-mounted telescopes should fit inside the CASELX10 with a small amount of space between the fork arms and the foam. A small cut may be needed for the fork arms and/or control panel.
    • Most 10" fork-mounted SCT including Meade 2120, 10" LX2 through LX10 and Ultima 9-1/4"
    • Optical tube of Celestron and Meade 10" German Equatorial will fit inside loosely with extra padding needed to take up extra space, especially at one or both ends of the optical tube

• LX90-10ACF 10" f/10 Catadioptric GoTo Telescope tfszddazvdwexzftrcyufv
• Series 4000 26mm Super Plossl Eyepiece (1.25")
• Standard Field Tripod
• AudioStar GoTo Hand Controller
• #828 8x50 Rear-Focus Viewfinder (Blue)
• 1.25" 90° Star Diagonal
• Motorized Altazimuth Mount
• Set - Hex Wrenches
• Bubble Level / Compass Eyepiece Insert
• Limited 1-Year Warranty

• JMI Telescopes - CASELX10 Telescope Carrying Case

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Technical parameters

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

  Optical Design	Schmidt Cassegrain
  Aperture	254 mm / 10"
  Focal Length	2500 mm
  Focal Ratio	f/10
  Eyepiece Barrel Diameter	1.25"
  Diagonal	Yes, 90 Rating 90% users recommend this product to others. And what about you? This product has already been rated by 24 owners. Add your rating and experience with the product. Discussion Ask our technicians if you have a problem with your settings, or if anything is unclear in the user manual you have downloaded. You can make use of our moderated discussion. The discussion is public and helps other users of our website who may be encountering similar problems. The discussion is empty - enter the first post Post a new topic / query / comment: Items marked with * are required. Your name *: E-mail : Subject *: Message *: Your email address will not be displayed. Do not forget to fill it in if you want to receive a reply to your enquiry/contribution. Processing of personal data in accordance with GDPR