Founder Optics FOT86 Triplet Apo

The Founder Optics FOT86 Triplet Apo is a high performing 3-element ED APO triplet refractor designed in Japan and manufactured by Founder Optics in Tiawan.

Founder Optics FOT86 Triplet ApoFor the FOT86 refractor Founder Optics adopted 2 ED glass lenses of S-FPL 53 and S-FPL 51. In addition to the ED lenses, they incorporate a unique design, as each element is fully separated. With the two fluoro-crown ED glass elements and fully multi-coated optics, the FOT86 provides performance that is crystal clear and superb sharp with zero aberration or distortion. For imaging purposes, in addition to a dedicated field flattener, the FOT86 package includes M42 and M48 adapters.

The Founder Optics FOT86 Triplet Apo hybrid drive system features eight ball bearings for smooth operation. The design incorporates two sets of four ball bearings at 2 sides between the drawtube and the focuser cover which travel linearly. After locking the knob there is no gap among the drawtube, the ball bearings and the focuser cover. This keeps the focuser always paralleled to the optic axis to ensure it operates smoothly.

The Founder Optics FOT86 Triplet Apo includes a 2.7’’ twist lock dual speed focuser that can handle up to 8kg. The smooth focus motion and fine focus wheel allow for precision adjustment for critical focusing of an eyepiece or camera. A unique lock function offers a heavy load capacity as the lock grabs the rack and pinion and the drawtube in two directions. The design makes the focuser always parallel with the optic axis instead of pushing against the drawtube to eliminate focus shift while focused.

The focuser offers a longer traveling distance than many traditional focusers as the 95mm distance provides more room to adjust focus, offering enhanced flexibility for imaging applications. The adaptable rotated structure of the focuser facilitates the ability to have the best position to adjust the focuser when observing or imaging.

The retractable dew shield offers smooth movement in sliding to position and three screws securely hold the dew shield to avoid spinning or movement while imaging. The telescope is crafted with a CNC machined aluminum body and high-gloss anodized finish. And the scope can be safely ensconced for travel in the included aluminum case.

The Founder Optics FOT86 Triplet Apo specifications include:

– Optical System: 2 ED APO Triplet (Fully Separated Elements)

– Clear Aperture: 86mm

– Focal Length: 560mm (f/6.5)

– Image Circle (with Field Flattener): Ø44mm

– Focuser: 2.7’’ Rack & Pinion Patented Focuser (Twist Lock)

– Weight: OTA: 3.5kg/with Tube Ring: 4.6kg

– Diameter of Main Tube: 90mm

– Tube Length: Fully Retracted: 456mm/Fully Extended: 545mm

Founder Optics FOT106 Triplet ApoThe Founder Optics FOT86 Triplet Apo package includes:

– High Quality Aluminum Case with Key

– Rack & Pinion Focuser

– 1.25’’/2’’ Twist Lock Adapter

– Crank Handle with 1pc 1/4″-20 Hexagon Screw

– Tube Rings with 4pcs Dovetail Screws

– Star Finder Shoe

– Field Flattener (M42) with Exchangeable M48 Adapter

– 7’’ Vixen Type Mount Dovetail

– Quality Certification Card with Serial Number

– Cleaning Cloth

– Dust Caps (for Objective Lens)

You can learn more about the Founder Optics FOT86 Triplet Apo here.

And to make it easier for you to get the most extensive news, articles and reviews that are only available in the magazine pages of Astronomy Technology Today, we are offering a 1-year magazine subscription for only $6! Or, for an even better deal, we are offering 2 years for only $9. Click here to get these deals which only will be available for a very limited time. You can also check out a free sample issue here.

The sun is more active than its been in years and we have the Annular Solar Eclipse on October 14, 2023 and the Total Solar Eclipse on April 8, 2024! If you’d like to learn more about the technology behind solar observing, solar imaging and more, you can check out our free publication, “The Definitive Guide to Viewing and Imaging the Sun”. You don’t have to sign up or provide any information, simply click here and enjoy reading!

Comments are closed.