Meade LX90™ with ACF™ Optics


The Legend.

Meade's LX90 ACF is a favourite of astronomers making the jump to their first, serious, large aperture telescope. Long after they have read the reviews, compared specifications, visited the blogs and talked to wizened astronomers, all roads point to the LX90. Performance, quality, value and ease of use are the hallmarks of a great telescope. Now’s your chance to own the legend.

Advanced Coma-Free Optics

The LX90-ACF comes in a complete line of OTA apertures, from 8-inch to 12-inch. All sizes come with the Advanced Coma-Free (ACF) optical systems. The Advanced Coma-Free optical system has brought the highest level of optical performance well within the reach of most amateurs. Using the Meadeexclusive design, ACF optics achieve aplanatic performance — with a flatter field, reduced astigmatism and eliminated diffractions spikes — equal to Ritchy-Chétien systems, at a fraction of the price. Coupled with Meade’s Ultra- High Transmission Coatings (standard on all LX90-ACF systems), you have the ultimate in premium optics.

Audiostar® Computer with Astronomer Inside

Meade’s AudioStar® controls the telescope to find and track any of over 30,000 celestial objects automatically. Share the wonders of the universe with friends and family as they listen to audio content through its built-in speaker. Astronomer Inside™ plays over 4 hours of audio content, bringing the cosmos to life. Don't know what's up in tonight's sky? Astronomer Inside does; watch and listen as it takes you on a tour of the night's best celestial objects.

Built In GPS

The LX90-ACF's built in GPS sensor precisely provides the time, date and location, allowing for a quick assisted alignment.


Product Description


Meade LX90-ACF (f/10) Advanced Coma-Free w/UHTC from 8" to 12".

The patented Meade Advanced Coma-Free (ACF) optical design offers the coma-free pinpoint star images and flatter image fields greatly desired by discerning amateur astronomers, astrophotographers and professional observatories alike. This system also reduces the astigmatism and eliminates the diffraction spikes found in classical Ritchey-Chrétien designs. No competing Schmidt-Cassegrain Telescope can make those claims.

The LX90 is available in three aperture sizes: 8”, 10" and 12", with f/10 ACF optical system and Ultra-High Transmission Coatings (UHTC) for maximum image brightness and contrast. Electronics include the advanced Meade AudioStar™ computer system with over 30,000 object library, multiple guided tours, High Precision Pointing capability, and Meade SmartDrive with Permanent Periodic Error Correction.

Precise and quick star alignment is done near effortlessly with an incorporated 16 channel genuine Sony GPS receiver. The AudioStar™ is flash-updatable via free downloads at Meade.com (optional cable required).

All LX90 models feature the solid and stable LX90 aluminum double fork mount, with fast slew speed adjustable from 1 to 7 degrees per second. Fine slewing and photographic guiding speeds can be adjusted from .01x to 1x sidereal in one one-hundredth increments. The mount and all electronics are internally powered by 8 (user supplied) C-cell batteries which will typically operate the telescope for a generous 60 hours (optional Meade Universal AC adapter also available). The mount also has mechanical locks in both axis allowing adjustment even without power.

The LX90 comes fully equipped with a heavy duty height adjustable Meade Field Tripod, 1.25" diagonal prism, Series 4000 26mm 5-Element Plössl eyepiece, and Meade AutoStar® Suite Astronomer Edition Software for PC and an 8x50 optical viewfinder with quick release bracket. Scope weight is 15kg (33 lbs) with 8.6kg (19 lbs) tripod. Ships in 2 boxes. Product carries full one year Meade factory limited warranty.



Models and Prices

LX90 8" ACF LX90 10" ACF LX90 12" ACF
Opticstar Retail Price £1,680.00 £2,560.00 £3,245.00
Product Code 0810-90-03 1010-90-03 1210-90-03
Clear Aperture 8" 10" 12"
Optical Design Advanced Coma-Free (ACF)
Optical Coatings UHTC™ - Ultra High Transmission
Focal Length 2,000mm 2,500mm 3,048mm
Focal Ratio f/10 f/10 f/10
Resolving Power
(Dawes' Limit)
0.570 arc-seconds 0.456 arc-seconds 0.380 arc-seconds
Oversized Primary Mirror Yes Yes Yes
Focuser Mechanism Single Speed Focuser
Viewfinder 8x50mm with cross-hair reticle
Eyepiece(s) 26mm Series 4000™ Super Plössl
Diagonal 1.25" prism diagonal
Mount Type Fork type; double-tine
Hand Controller AutoStar® AutoStar® AutoStar®
Object Database 30,000 objects 30,000 objects 30,000 objects
Pointing Precision
(High-Precision)
1.5 arc-minute (+/-) 1.5 arc-minute (+/-) 1.5 arc-minute (+/-)
Periodic Error Correction
(PEC)
Polar mode only (RA) Polar mode only (RA) Polar mode only (RA)
Slow Motion Controls Electronic Electronic Electronic
Slew Speeds RA and Dec:1x, 2x, 8x, 16x, 64x, 128x sidereal and 1.5°/sec., 3°/sec., 6.5°/sec.
Tracking Rates Sidereal, Lunar, or custom-selected from 2000 incremental rates
Control Panel 12v Power port, On/Off Switch, Handbox port, 2x Aux ports
Tripod Standard Field Tripod
Power (optional) 12v DC, 5 amp power supply
Batteries (user supplied) 8 x C cells 8 x C cells 8 x C cells
GPS Receiver Yes Yes Yes
Electronic Focuser optional optional optional
Smart Drive™ Yes Yes Yes
Astronomer Inside™ Yes Yes Yes
Anti-vibration Pads Optional Optional Optional
Wedge (optional) 8" Wedge for LX90 w/ Adapter Plate (#07002-1) 8" Wedge for LX90 w/ Adapter Plate (#07002-1) 8" Wedge for LX90 w/ Adapter Plate (#07002-1)
Transit weight 24 kg 31 kg 36 kg

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