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Engineered for peak performance, copious light-gathering ability, and a fast focal ratio, Meade Instruments' LX850-ACF UHTC 14" f/8 Catadioptric Telescope has a shorter focal length than its two-stop slower 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 0.326 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 an hefty 63 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.
Large 14" 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
Resolution (Dawes'): 0.326 arcsec
Dual speed 7:1 reduction ratio
Uses a toothless friction system that allows for super-fine precision focusing with zero backlash or image-shift
Losmandy-style dovetail plate
Plate is attached to OTA using wide-stance radius blocks for sturdier mounting