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Meade 12" f/8 LX850 ACF Optical Tube Assembly

by Meade
SKU 1208-80-01

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$4,599.99

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The bare essentials for an unbeatable price.

Designed and Manufactured in North America.

We've heard your requests, and we listened. That's why we're proud to offer the f/8 OTA without the accessories for an ultra-low cost.

Building on Meade's award-winning Advanced Coma-Free (ACF) optics, the 12" OTA employs a fast f/8 optical system with high-contrast baffling that ensures crisp, pinpoint imaging to the very edge of the field. Features an internal zero image shift Crayford-style focusing system with a two-speed 7:1 reduction control that provides smooth, precise focusing at any magnification. Also features Meade's Ultra-High Transmission Coatings (UHTC) for maximum brightness and contrast, an oversized low-expansion primary mirror for extra aperture and to prevent thermal expansion of the mirror, and diffraction-limited optics.

The ACF primary, secondary and corrector plate glass blanks are manufactured in the USA exclusively for Meade.

The optical path and components of the ACF telescope design

The optical path and components of the ACF telescope design

Includes precision machined Losmandy-style dovetail rail mated to the tube with wide-stance radius blocks for rock-steady mounting, and front and rear dust covers. Focal length is 2438mm. OTA weight is 41 lbs.

Warranty: Limited Warranty against defects in materials or workmanship for two years from date of purchase. This warranty is provided by Meade for the benefit of the original retail purchaser only. For complete warranty details contact Meade at 800-626-3233.
  • 12" f/8 Advanced Coma Free Optics- 2438mm focal length
  • Ultra-High Transmission Coatings (UHTC)
  • Internal Crayford style focuser with 7:1 reduction and zero image shift
  • Oversized low-expansion borosilicate primary mirror
  • Losmandy wide style mounting rail

Best for viewing Fainter deep sky
Best for imaging Solar, lunar, planetary & Messier objects
Astro-imaging capability Lunar, planetary & long exposure
User level Advanced
Optical design Advanced Coma-Free (ACF)
Optical diameter 305mm
Focal length 2438mm
Focal ratio f/8.0
Resolving power 0.38arc*sec
Lowest useful magnification 44x
Highest useful magnification 300x
Highest theoretical magnification 610x
Limiting stellar magnitude 15.2
Optical quality Diffraction limited
Finder scope None
Focuser Internal
Mount type Optical Tube without Mount
Tube material Aluminum
Weight, optical tube 41.0 lbs.
Additional included accessories Losmandy style dovetail bar
Other features Ultra High Transmission Coatings (UHTC), Internal zero-shift Crayford style focuser
Warranty Two year


The bare essentials for an unbeatable price.

Designed and Manufactured in North America.

We've heard your requests, and we listened. That's why we're proud to offer the f/8 OTA without the accessories for an ultra-low cost.

Building on Meade's award-winning Advanced Coma-Free (ACF) optics, the 12" OTA employs a fast f/8 optical system with high-contrast baffling that ensures crisp, pinpoint imaging to the very edge of the field. Features an internal zero image shift Crayford-style focusing system with a two-speed 7:1 reduction control that provides smooth, precise focusing at any magnification. Also features Meade's Ultra-High Transmission Coatings (UHTC) for maximum brightness and contrast, an oversized low-expansion primary mirror for extra aperture and to prevent thermal expansion of the mirror, and diffraction-limited optics.

The ACF primary, secondary and corrector plate glass blanks are manufactured in the USA exclusively for Meade.

The optical path and components of the ACF telescope design

The optical path and components of the ACF telescope design

Includes precision machined Losmandy-style dovetail rail mated to the tube with wide-stance radius blocks for rock-steady mounting, and front and rear dust covers. Focal length is 2438mm. OTA weight is 41 lbs.

Warranty: Limited Warranty against defects in materials or workmanship for two years from date of purchase. This warranty is provided by Meade for the benefit of the original retail purchaser only. For complete warranty details contact Meade at 800-626-3233.
  • 12" f/8 Advanced Coma Free Optics- 2438mm focal length
  • Ultra-High Transmission Coatings (UHTC)
  • Internal Crayford style focuser with 7:1 reduction and zero image shift
  • Oversized low-expansion borosilicate primary mirror
  • Losmandy wide style mounting rail

Best for viewing Fainter deep sky
Best for imaging Solar, lunar, planetary & Messier objects
Astro-imaging capability Lunar, planetary & long exposure
User level Advanced
Optical design Advanced Coma-Free (ACF)
Optical diameter 305mm
Focal length 2438mm
Focal ratio f/8.0
Resolving power 0.38arc*sec
Lowest useful magnification 44x
Highest useful magnification 300x
Highest theoretical magnification 610x
Limiting stellar magnitude 15.2
Optical quality Diffraction limited
Finder scope None
Focuser Internal
Mount type Optical Tube without Mount
Tube material Aluminum
Weight, optical tube 41.0 lbs.
Additional included accessories Losmandy style dovetail bar
Other features Ultra High Transmission Coatings (UHTC), Internal zero-shift Crayford style focuser
Warranty Two year