We are here to help
Monday to Saturday - 10:00am-4:00pm
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor
Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor

Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor

(Inc. 20% VAT)
Loyalty Points: 1,239
In stock, Shipped in 1-2 working days

In Stock!

Product Code
Aperture (mm)
86 mm
Telescope Type
APO Triplet Refractor
Email us a question about this Product
Founder Optics

Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor Telescope

Founder Optics FOT86 Telescope Main Features:

  • Super ED class with a remarkable image.
  • 2 ED Glasses S-FPL 53 & S-FPL 51 & Lanthanum - Fully Separated Triplet (FST)
  • Fully Multi-coated optics ensures excellent light transmission
  • Impressive use experience, design for both observation and photography
  • Finely CNC machined aluminium body and focuser
  • Deluxe high-glossy anodizing finish
  • Retractable lens shade
  • PATENTED:US 8,693,092 B2 / Taiwan 1417570

Founder Optics FOT86 Telescope Design:

This is an excellent performance 3-element ED APO triplet refractor designed by a famous optical designer in Japan, who is a legendary designer in the Astronomy industry. The optical performance is impressive as we use 2x ED glasses.

Unlike most ED triplets which use only 1 ED glass element, we adopted 2 ED glass of S-FPL 53 and S-FPL 51 to bring a remarkable image to your eyes. With two fluoro-crown ED glass elements and fully multi-coated optics, the refractors provides a crystal clear, superbly sharp, zero aberration and distortion image.

Besides the lens, we use a unique design - each element is fully separated which is different from other triplet lenses.

Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor Telescope Diagram

Founder Optics FOT86 Telescope Quality:

In order to complete this unique design, it requires a very high level machining and assembly capability. We work with a 50 years optical factory located in Taiwan. This factory has a long history and keep a good partnership with many Japan famous brands. This factory known for a precisely machining capability and high technical assembly skill. Their producing know-how create accomplishment.

Besides, not only the production process, the high standard of quality control is also crucial to make FOT86 and FOT106 successfully—Quality Certification Card.

We test every unit and create this card to make customer understand the quality customer purchased. By doing so, customer can be confident with our quality and also mean we treat every unit as a delicate product not just commercial product. We are very serious to provide the best triplet to the end user.

Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor Telescope Inspection Report

 Focuser - 2'' Rack & Pinion

Perfect Hybrid Drive system with 8 Ball bearings- More Smoothly!

2sets of 4pcs ball bearing at 2 sides between the drawtube and the focuser cover travel linearly. After locked the knob, there is no gap among the drawtube, 8pcs ball bearings, and the focuser cover. It does not only keep the focuser always paralleled the optic axis, but also keep it moved very smoothly.

Dual Speed Focuser- 1:11 – Extremely Accurate!

Smooth focus motion and fine focus wheel allow precision adjustment from critical focusing of eyepiece or camera.

Unique Lock Function–  Heavy Loading Capability!

Special lock grabs the rack& pinion & drawtube in two direction. The design makes the focuser always paralleled the optics axis. Instead of pushing against the drawtube to eliminate focus shift while it’s focused. It’s totally breaking the traditional single point fixed design in the market. And can handle up to 8kg.

Longer Traveling Distance– Flexible for Photographing Accessories!

Unlike other focuser, longer traveling distance 95mm provide more room for adjust focus. This is very flexible for some applications.;

Suit for variety photographing accessories to adjust the focuser to gain the best image. Friendly Use!

Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor Telescope Focuser

Stable Dew Shield Fixing

Smoothly slide the dew shield.  Three fixing screws hold dew shield well to avoid the spinning or moving while shooting to make sure you can capture the best image. Also, three screws prevents the dew shield falling when carry telescope.

Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor Telescope Dew Shield Fixing


Specifications: Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor

  • Optical System: 2 ED APO Triplet (Fully Separated Elements - includes 2 ED APO lenses S- FPL53 & S-FPL51)
  • Clear Aperture: 86mm
  • Focal Length: 560mm
  • Focal Ratio: f/6.5
  • Lens Coating:  Fully Multi-Coated
  • Image Circle (with Field Flattener): Diam. 44mm
  • Focuser: 2’’ Rack & Pinion Patented Focuser (Twist Lock)
  • Weight OTA: 3.5kg; with Tube Ring: 4.6kg
  • Diameter of Main Tube: 90mm; of Dew Shield: 110mm
  • Tube Length: Fully Retracted: 456mm/Fully Extended: 545mm

What's in the Box

What's in the Box: Founder Optics FOT86 ED 86mm f/6.5 Triplet Refractor

1) High Quality Aluminum Case with Key
2) FOT 86 with Patent Rack & Pinion Focuser
3) 1.25’’/ 2’’ Twist Lock Adapter
4) Crank Handle with 1pc 1/4"-20 Hexagon Screw
5) Tube Rings with 4pcs Dovetail Screws
6) Star Finder Shoe
7) 7’’ Vixen Type Mount Dovetail
8) Quality Certification Card with Serial Number
9) Cleaning Cloth
10) Dust Caps (for Objective Lens)​
11) Field Flattener with M42 and M48 Threads

Download instruction manual

"The Founder Optics FOT106 boasts an impressive optical performance both visually and with a camera, and a portable design suitable for dark-sky sites" - BBC Sky at Night Magazine. Read full review for Founder Optics FOT106 ED 106mm, f/6, Triplet Refractor here

Reviews (0)

Be the first to Write a Review for this item!


At The Widescreen Centre, we prioritize prompt order processing and dispatch. We strive to dispatch all orders on the same day or the next working day, depending on the time of your order. We hold extensive stocks to ensure that your items are ready for immediate despatch. Please note that the cut-off time for same-day dispatch is usually 1:30 p.m.

For delivery within Mainland UK, we use reputable couriers to provide efficient service. You can expect your package to arrive in 1-2 working days. Please note that a signature may be required upon delivery to ensure a secure receipt.

In the case of special order items, the delivery time may be longer. If you have any concerns or questions about the delivery of your item, please don't hesitate to Contact Us. We are here to assist you.

Should there be any delay in dispatching your order, we will notify you to keep you informed.

Please be aware that The Widescreen Centre cannot be held responsible for any postal or third-party delays that may occur. We are committed to providing a reliable and efficient delivery service for our valued customers.

For more information please click here

FAQ - Have a question about this product? Fill in the form below and we will get back to you as soon as we can!

Please add the two numbers