William Optics FLT98 OTA with 3.5" DDG focus (Option 1)


William Optics FLT98 (FPL 53 flourite ED )Triplet F/6.3 OTA in Aluminum White color powder painted tube with new 3.5 DDG focuser includes mounting rings. No case. NEW AIR SPACED APO triplet lens designed by A. Strakhov, STM coated!

The FLT98 is a portable, high quality, versatile APO telescope designed for individuals who want a very high quality instrument in a relatively compact package.




Focal Ratio


Focal Length

618 mm

Objective Type

Air-spaced Triplet, Apochromatic objective

Lens Shade


Linear Focuser

3.5" 360 Rotating Camera-angle Adjuster
1.25" Adapter Included
100 mm Focuser Travel Length

1.25" Adapter


Type of Mount

Mounting Rings

Tube Length

513 mm (Fully Retracted)
600 mm (Fully Extended)

Tube Weight

5.18 kg


Stunning Optics

  • Features a top-quality triplet f/6.3 air-spaced objective, one of the best WO ever made!
  • This scope is extremely sharp and has a great color correction. It is ideal for astrophotography.
  • Precision optics with STM coatings.
  • Designed by a leading Russian designer with FPL-53 glass.

    Linear Focuser

  • Extra-smooth 3.5" Linear focuser: a treat to use during astrophotography. No more image shifting!
  • Two Locking screws!
  • 360 deg. rotatable.
  • Extra-heavy duty.
  • Large aluminum knobs.

    Patented Design

  • Stainless steel reinforcement inserts on both sides and on the back to allow heavy loads without problems.
  • DDG Integration you ever experienced with a scope!
  • Graduated scale for precise camera alignment.

    Simply Beautiful Finish

  • Solid CNC-machined mounting rings included in the price.
  • Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, golden finish, retractable dewshield, anodized 360 deg. rotatable crayford focuser, dewshield cap.

    Total Quality Package

  • Dedicated field flattener available.
  • 2" & 1.25" adapters included.
  • All with brass anti-marring compression rings.

    High Quality Aluminum Case

  • Stow away your telescope in the practical and safe aluminum case.
  • 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!

  • Pre-order:

    We currently do not have physical stock of this product and will order it upon receipt of a 80% deposit. An updated quote may be requested beforehand - see next bullet.

    Price is based on the following:

    R10.30/$ mid-market exchange rate
    40% shipping fee
    Excludes local delivery

    Final price will be based on the actual costs applicable. The remainder is payable before or on collection/delivery to the customer.
    Delivery is typical 2 to 3 weeks to our offices.

    Please en-quire for final arrangement details.

    Add to Cart:

    • Model: WO_A_F98
    • Shipping Weight: 10kgs
    • 5 Units in Stock
    • Manufactured by: William Optics

    This product was added to our catalog on Tuesday 21 September, 2010.

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