Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only)

Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only)

Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only)

B&H # MEF8ACF16OU MFR # 1608-80-01
Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only)

Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only)

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Expected availability: 7-14 business days 

Product Highlights

  • 16" Catadioptric Telescope
  • f/8 Focal Ratio
  • 3251mm Focal Length
  • Aplanatic Advanced Coma-Free Design
  • Ultra-High Transmission Coatings (UHTC)
  • Borosilicate Primary Mirror
  • Primary Mirror Lock
  • Two-Speed Internal Crayford Focuser
  • Losmandy-Style Dovetail Plate
  • OTA Only - Mount and Tripod Required
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Options: f/8 OTA Only

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  • 1Description

Engineered for peak performance, copious light-gathering ability, and a fast focal ratio, the massive LX850-ACF UHTC 16" f/8 Catadioptric Telescope represents the largest aperture in Meade Instruments' LX line, with a shorter focal length than its two-stop slower LX200 sister-scope to allow for shorter exposure times during astro-imaging sessions. The faster focal ratio is combined with multiple technologies to produce distortion-free high-contrast images with true color rendition across the entire flat field of view with an impressive Dawes' resolution of just 0.285 arcsec. The scope's performance begins with the aplanatic Advanced Coma-Free (ACF) optical system which produces a flat field of view with reduced astigmatism and zero diffraction. A low-expansion borosilicate primary mirror further reduces distortion due to temperature fluctuation, and the Schott Borofloat glass corrector plate aligns the light waves to correct spherical and chromatic aberrations. Meade then fully multi-coats all optical surfaces with their proprietary Ultra-High Transmission Coatings (UTHC) which increases light transmission, further improves color fidelity, and boosts contrast.

For long-exposure astrophotography or long-duration observation sessions, the LX850 boasts a primary mirror lock to completely cancel any residual image shift due to mirror movement. Beyond the fast focal ratio and mirror lock, to further aid its ability as an imaging OTA is a high-precision two-speed internal Crayford-style focuser. This design replaces the gears in the more popular rack-and-pinion style and uses a friction system that holds a pin against the drawtube which allows for exceptionally fine focusing without the backlash common in rack-and-pinion focusers. Using a Crayford provides users with the ability to achieve the level of focusing precision required for astrophotography.

The LX850 is offered here without any accessories, mount, or tripod for those who have all their gear and just want to upgrade their OTA. This version of the LX weighs in at a substantial 70 pounds by itself, so make sure the mount head and tripod it gets put on can handle it in addition to the weight of any accessories. To ensure a rock-solid connection to your mount it is outfitted with the larger Losmandy-style dovetail plate with wide-stance radius blocks that wrap up the sides of the OTA for greater overall mounting stability.

Optics
  • Large 16" aperture
  • f/8 focal ratio
  • Long 2845mm focal length
  • Advanced Coma-Free (ACF) design permits aplanatic performance, with a flatter field, reduced astigmatism and zero diffraction spikes
  • Proprietary Ultra-High Transmission Coatings (UTHC) on all optical surfaces increases light transmission while improving color rendition and contrast
  • Low-expansion borosilicate primary mirror virtually eliminates distortion due to temperature changes to the mirror
  • Schott Borofloat glass corrector plate
  • Primary mirror lock: Completely cancels any residual image shift due to the primary mirror movement during long exposure astrophotography or observing
  • Impressive resolution of 0.285 arcsec (Dawes')
Focuser
  • Internal Crayford-style
  • Dual speed 7:1 reduction ratio
  • Uses a toothless friction system that allows for super-fine precision focusing with zero backlash or image-shift
Mounting
  • Losmandy-style dovetail plate
  • Plate is attached to OTA using wide-stance radius blocks for sturdier mounting
  • OTA weight: 70 pounds
  • Mount and tripod required
UPC: 709942998047
In the Box
Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only)
  • Limited One-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Catadioptric
    Aperture 16.0" / 40.6 cm
    Focal Length 3251 mm
    Focal Ratio f/8
    Eyepiece Barrel Diameter N/A
    Diagonal None
    Finderscope None
    Tripod None
    Mount Type Losmandy-style dovetail plate
    Power Source None
    Optical Tube Dimensions Not specified by manufacturer
    Weight 70.0 lb / 31.8 kg

    Meade LX850-ACF UHTC 16" f/8 Catadioptric Telescope (OTA Only) Review

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