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FLT 151 R&P APO Triplet DDG Refractor
£9,649.00 inc. tax

£8,040.83 ex. tax
? Tax based on United Kingdom.


Please call for latest delivery info - 023 9257 0283 / dave@darkframe.co.uk

Dave Says: "I can only say, a telescope that would provide the reassuring feeling you'd have, possibly knowing you had a Maserati GranTurismo Cambiocorsa in your garage. I think William Optics should provide Key Fob's, but I digress.  

Sporting William Optic's DDG focuser this telescope is a delight to use and yes, I've spent a night with one... It is a telescope for life, and unsurpassed as a telescope to be proud of.

The FLT151 is probably the ultimate APO Triplet with performance to match, end of.

Please Note: Delivery is currently circa 25-35 days with all William Optics products

Experience the best of the line: the Williams Optics FLT151 Triplet APO f/6.6 Refractor with 3.5" new WO R & P DDG Focuser.

The FLT151 Features a top-quality triplet air-spaced objective using outstanding Ohara FPL-53 type glass which provides superb correction for these refractors. In addition, this lens combination provides very high contrast and a flat image field.

For visual observing and also with astrophotography you will discover a wealth of detail and tremendously clear image reproduction.

Optically unbeatable

  • Features a top-quality triplet air-spaced objective with FPL-53 glass; 
  • This scope delivers extremely sharp images and has a great color correction. It is ideal for astrophotography.

  • R & P Focuser

  • Extra-smooth 3.5" R&P DDG focuser: a treat to use during astrophotography. No more image shifting!  
  • 360 deg. rotatable.
  • Extra-heavy duty. 
  • Graduated scale for precise camera alignment 
  • Two-speed microfocuser is STANDARD on all units
  • Large aluminum knobs and protection dual speed cap. 

    Simply Beautiful Finish

  • Solid CNC-machined mounting rings.
  • Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, red color finish, retractable dewshield, anodized 360 deg. rotatable R&P focuser, dewshield cap.  
  • Despite of its 151mm objective, the scope is still very compact and solid. 
  • Highly precise CNC machined lens cell. 
  • Total Quality Package 

  • 2" & 1.25" adapters included. 
  • All with brass anti-marring compression rings. 
  • 168mm mounting rings included in the price. 

Though you will never need it, you have a 2-year warranty from WO, and the certainty that we will be there to assist you even beyond that, if you need!

Aperture  151mm 
Focal Ratio  F/6.6
Focal Length  998mm
Objective Type  Air-spaced Triplet, Apochromatic objective with FPL53 glass.
Lens Shade Retractable
Focuser New 3.5" R&P DDG Focuser, rotatable design
Intergrated 1:10 fine focus
100 mm Focuser Travel Length 
1.25" Adapter  Provided
Type of Mount Mounting Rings
Tube Length  930mm (Fully Retracted) 
1100mm (Fully Extended)
Tube Weight  14 kg

Specification for Apochromatic Lenses

All WO refractors objective are double tested and inspected before shipping to our customer, these telescopes are free of coma and astigmatism.
Since all individual lens surfaces are machine coated sometime it could have visual imperfections which do not affect the objective optical performance.

Dimensions of scratches and points shall not exceed the following values:

Surface finish class Scratches Points Accumulation of defects Width,not more, mm Total length, not more, mm, Diameter no more,mm, Quantity, no more Diameter. 

Scratches Width, not more, mm 0.025mm
Total length, not more 1/4 of total lens diameter. 
Quantity no more 3
Dots or spot points No more, mm 0.4mm
Quantity, no more 3
Accumulation of defects Limited area, mm 0.8mm^2
Total area of scratches and points, no more, square mm 5.8mm^2


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Product Code
- A-F151
Product Condition
- New


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    11 Drift Road, Clanfield, Waterlooville, Hampshire, PO80JJ, United Kingdom
    +44 23 9257 0283
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