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Meade ACF 10" 12" 14" 16" F8 Optical Tube Only Advanced Coma Free

Meade ACF 10" 12" 14" 16" F8 Optical Tube Only Advanced Coma Free
Meade ACF 14" OTA ONLY Meade ACF OTA ONLY Dual Speed Crayford Focuser Meade ACF OTA Losmandy-format Dovetail Plate Radius Block Meade ACF OTA ONLY Guide Scope Dovetail Mount
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Meade F/8 ACF™ 10" 12" 14" 16" Optical Tube Only
The Meade ACF Optical tubes have the following desirable features:
- Losmandy compatible dovetail plate, allowing you the choice of your favourite mount.
- Advanced Coma Free Optics enabling visual or imaging use in the same OTA.
- Internal Dual speed Crayford-style 1:7 micro focuser eliminates the need for mirror locks.
- Diagonal and finder scope included.
- Vixen-format guide scope bracket
Award-winning Advanced Coma-Free™ (ACF™) optics.
Building on Meade’s award-winning Advanced Coma-Free™ (ACF™) optics, this optical tube employs a fast f/8 optical system with high-contrast baffling that insures 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. Includes precision machined Losmandy-style dovetail rail mated to the tube with wide-stance radius blocks for rock-steady mounting, Series 5000 enhanced 99 percent reflectivity diagonal, 8x50 finderscope with quick release mounting bracket, Series 5000 HD60 25mm eyepiece, and front and rear dust covers.
The "advanced" in Advanced Coma-Free
Building from a classic RC design, Meade has created a new design with the same coma-free pinpoint star images and flatter field also reduces the astigmatism and eliminates diffractions spikes found in classical RCs. The ACF is the perfect platform for the demanding researcher and imaging enthusiast with telescopes available in apertures of 10 inches, 12 inches, 14 inches, and 16 inches.
Coma Killer
What is coma? It’s an optical aberration. Precisely defined, coma is a distortion in which the image of a star cannot be focused to a point, but takes on the shape of a comet.
Meade Ultra-High Transmission Coatings (UHTC™)
Increases total light transmission and image brightness by nearly 20% over Meade’s standard coatings. Objects such as stars, galaxies and nebulae will appear significantly brighter.
Meade ACF OTA range Guide: ACF 10" OTA ACF 12" OTA ACF 14" OTA ACF 16" OTA
Optical Design: Advanced Coma-Free (ACF)    
Clear Aperture: 10" 12" 14" 16"
Focal Length: 2,032mm 2,438mm 2,845mm 3,251mm
Focal Ratio: f/8 f/8 f/8 f/8
Resolving Power (Dawes'): 0.456 arc-seconds 0.380 arc-seconds 0.326 arc-seconds 0.285 arc-seconds
Oversized Primary Mirror: Yes Yes Yes Yes
Focuser Mechanism: Internal Crayford-style, zero image-shift, dual speed 7:1 focuser
Viewfinder: 8x50mm with cross-hair reticle    
Dovetail: Losmandy®-style with ultra stable radius blocks  
Eyepiece(s): HD-60 25mm      
Diagonal: Series 5000™ 2" Dielectric Diagonal    
Transit weight: 18kg 22kg 33kg 66kg


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