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Meade ACF F/8 14" UHTC Optical Tube
Research Grade - Advanced Coma-Free & UHTC Optics - Optical Tube Assembly
To order this item outside mainland Britain or Highlands & Islands, please contact us.
Meade ACF F/8 14" Optical Tube
  • Optical Design: Advanced Coma-Free (ACF)
  • Pinpoint imaging to the very edge of the field
  • Ultra High Transmission Coatings (UHTC)
  • High-contrast baffling
  • Aperture: 356mm (14")
  • Focal Length: 2845mm (f/8)
  • Dual speed focuser (7:1)
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Meade ACF F/8 14" UHTC Optical Tube Assembly
Package includes:
  • Meade ACF F/8 14" Optical Tube with UHTC coatings.
  • Dual Speed Focusing mechanism (7:1).
  • One Year Manufacturer's Warranty.
  • OFFER: Please refer to the right hand column on this page.
Order No. Price (inc_VAT) Shipping Delivery click button to purchase
MEDA14F8T £ 6199.00 £ 0.00
Meade & Coronado
catalogue (PDF)

Outline
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 and front and rear dust covers. Focal length 2032mm. Product carries full one year Meade factory limited warranty.

Meade ACF F/8 Optical Tube with UHTC optical coatings.
Meade ACF F/8 Optical Tube with UHTC optical coatings.

The "advanced" in Advanced Coma-Free
A traditional Ritchey-Chrétien (RC) is a type of reflector that delivers a coma-free, flat field of view via hyperbolic primary and secondary mirrors. Because the mirrors in these telescopes have always been very expensive to make, few amateur astronomers could enjoy them.

Fortunately, Meade engineers developed a radical new Advanced Coma Free design by combining a hyperbolic secondary mirror with a corrector-lens-and-spherical-primary-mirror combination that performs as one hyperbolic element. This ACF design produces a coma-free, flat field of view that rivals traditional RC telescopes at a fraction of the cost.

The design even eliminates diffraction spikes and improves astigmatism, both of which are inherent in the traditional RC design. When reviewing Meade’s LX400-ACF Advanced Coma Free, Sky and Telescope magazine said, " [It] does indeed perform like a [Ritchey-Chrétien]. The difference between the off-axis images (compared to a Schmidt-Cassegrain) was dramatic to say the least."

Advanced Coma-Free optics
Meade’s (Advanced Coma-Free™) optics deliver stunning Ritchey-Chretien performance at a Schmidt Cassegrain price.

Coma Killer
What is coma? It’s not some sort of astronomical state of unconsciousness. 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.

f/8 Advanced Coma-Free Optics
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.

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.




Specifications ACF F/8 10" ACF F/8 12" ACF F/8 14" ACF F/8 16"
Optical Design Advanced Coma-Free (ACF) Advanced Coma-Free (ACF) Advanced Coma-Free (ACF) Advanced Coma-Free (ACF)
Optical Coatings UHTC™ (Ultra High Transmission Coatings)
Clear Aperture 254mm (10") 305mm (12") 356mm(14") 406mm (16")
Focal Length Focal Ratio 2032mm f/8 (10") 2438mm f/8 (12") 2845mm f/8 (14") 3251mm f/8 (16")
Resolving Power (Dawes' Limit) 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
Dovetail Losmandy®-style with ultra stable radius blocks
Viewfinder not included not included not included not included
Eyepiece(s) not included not included not included not included
Diagonal not included not included not included not included
Weight (approx.) 15 kg 19 kg 29 kg 33 kg
Transit Weight (approx.) 19 kg 26 kg 27 kg 57 kg


Notice
We are constantly checking the accuracy of the technical data. We are prepared to provide more detailed information on request. Technical data is subject to change without notice.

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Promotional Offer
Cash Back on Opticstar
Imaging Products
updated: 1st August 2017
Opticstar cashback offer.

Customers who purchase any Meade telescopes or Meade optical tubes or Meade mounts listed on this page qualify for a 10% cash back on any Opticstar astronomy cameras purchased at the same time or at a later date.

This offer is valid for 1 year commencing on the date that the Meade product is purchased from the Opticstar website or the Opticstar showroom.

Any additional purchases at a later date of Meade products that qualify for this offer will renew the cash back period to 1 full year.

Opticstar astronomy cameras that qualify for this offer include the following: Once an Opticstar CCD or CMOS camera has been purchased within a year of the qualifying Meade purchase, the cash back can be claimed by contacting Opticstar by email or over the phone quoting the receipt number(s). Please allow up to 14 days to process the payment.

Sample Images
Opticstar DS-145M ICE
posted: 13th March 2009
Sample image.
The NGC7293 shot by John Haunton with the Opticstar DS-145M ICE.
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Sample Images
Opticstar DS-335C ICE
updated: 20th August 2010
Sample image.
The M8 nebula shot by John Haunton with the Opticstar DS-335C ICE.
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posted: 26th February 2013
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High quality refractor telescopes, bundled with CCD cameras for deepd sky imaging, planetary video imaging and auto-guiding.
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A&M 80mm f/6 Review
"Best Of Breed"
updated: 25th March 2009
A&M 80mm f/6 A&M/TMB.
The A&M 80mm f/6 A&M/TMB has been reviewed in Cloudy Nights and it has been hailed as the "best of breed". The review concludes by saying "offers stunning performance while standing out from the crowd, look no further".
Willmann Bell
Books for Astronomy
updated: 28th February 2019
Willman Bell books.
Acclaimed books from Willmann Bell...
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Opticstar News
New DS-616C XL+ Model
posted: 24th August 2017
Opticstar DS-616C XL+.
Star product, improved.

The new Opticstar DS-616C XL+ deep-sky CCD is the successor to the popular DS-616C XL that earned the annual star product award back in 2013. It maintains all the features of the original model as well as other improvements.


DS-616C XL is Astronomy Magazine's Star Product
posted: 12th September 2013
Opticstar DS-616C XL is Astronomy magazine's product of the year.
Star product.

The Opticstar DS-616C XL deep-sky CCD camera has earned the annual star product award from Astronomy, the world's best-selling astronomy magazine. Read about it in the September 2013 issue.

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