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Catadioptric Telescope. Objective lens diameter: 254mm. Focal length: 2500mm

Catadioptric
Optical design
254
Aperture – the diameter of the light-collecting lens or mirror that the telescope uses to collect light
2500
Focal length – the distance from the primary lens or mirror to the point at which the light is focused
Availability

Product ID 71695
Brand Meade Instruments Corp.
Warranty 2 years
EAN 0643824209008
Package size (LxWxH) 80x90x67 cm
Shipping Weight 45.4 kg
Description

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-Chretien designs. No competing Schmidt-Cassegrain Telescope can make those claims.

The 10" LX90-ACF has a 10" diameter f/10 ACF optical system (focal length 2500mm) 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 1º to 7º 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. 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 mirror, Series 4000 26mm 5-Element Plössl eyepiece, and Meade Autostar Suite Astronomer Edition Software for PC and an 8x50 viewfinder with quick release bracket. Scope weight is 22.7kg with 8.6kg tripod. Ships in 2 boxes.

Features:

  • 10" f/10 Advanced Coma-Free Optics – 2500mm focal length
  • Ultra-High Transmission Coatings (UHTC)
  • Standard Field Tripod
  • AudioStar handbox with speaker and Astronomer Inside
Specifications
Product ID 71695
Brand Meade Instruments Corp.
Warranty 2 years
EAN 0643824209008
Package size (LxWxH) 80x90x67 cm
Shipping Weight 45.4 kg
Optical design catadioptric
Optical scheme coma-free Schmidt–Cassegrain
Optics coating lenses: multi-layer; mirrors: ultra-high transmission UHTC
Objective lens diameter (aperture), mm 254
Focal length, mm 2500
Magnification, x 42 — 650
Aperture ratio f/10
Resolution threshold, arcseconds 0.45
Limiting stellar magnitude 14.5
Image scale in focus, °/cm 0.177
Focusing by moving the main mirror
Eyepiece barrel diameter, in 1.25
Finderscope optical, 8x50 (with an erecting prism)
Tripod height (adjustable), mm adjustable, 760–1280
Telescope control autoguide
Mount alt-azimuth, fork, dual arm
Built-in sensors GPS
GPS receiver integrated
Tracking rate daily
Positioning accuracy standard: about 2
Ports AUX (universal port for connecting Meade accessories), RS-232
Autoguider
Hand controller Autostar II
Objects database over 30,000 objects
Update via Internet for catalogues of artificial Earth satellites, asteroids, comets
Ability to connect additional equipment camera via adapter and bayonet ring (purchased separately)
Power supply resource with AutoStar: about 20 hours, 8 C batteries
Optical tube dimensions, mm 298.5x298.5
Observed object planets of the Solar System and deep-sky objects
Video
Reviews
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Watch a video review on the excellent telescopes of the Meade LX90 series – sturdy, reliable, and large aperture optical tools. They feature the ACF optics, Meade’s AudioStar, and built-in GPS. Meade LX90 Telescopes ensure precise focusing, crisp detailed images, and wonderful observing of the deep sky objects
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