Founder Optics FOT86 ED 86mm f/6 Triplet Apo Refractor Telescope
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- Founder Optics FOT86 ED triplet refractor with 86mm aperture and f/6.5 focal ratio with premium optics for deep sky imaging and visual observing
- ‘Super Triplet’ design and included field flattener ensure flat field and minimal false color and distortion across a 44mm image circle
- Rotatable 2” premium hybrid rack-and-pinion focuser with twist lock
- Includes mounting rings, Vixen dovetail, carrying handle, optical test report, dust cap, cleaning cloth, and hard case
This premium 86 mm f/6.5 apochromatic triplet refractor from Founder Optics is designed to deliver razor-sharp and color-free images for astrophotographers and visual observers. The objective includes two ED elements and, unlike most refractors on the market, all three lens components are widely spaced. This ‘Super Triplet’ design is found in only one other line of telescopes, the venerable Takahashi TOA series.
The Founder Optics FOT86 has a focal length of 560 mm and a relatively fast focal ratio of f/6.5. The scope includes a dedicated field flattener that’s compatible with both DSLR and mirrorless cameras and dedicated astronomy cameras up to a full-frame sensor size. The flattener comes with M42/T threads and includes an M48x0.75 adapter for the camera side.
This Founder Optics scope includes a 360-degree rotatable 2" hybrid rack-and-pinion dual speed focuser with a 11:1 focus ratio and a twist lock. It also includes a built-in focus lock knob and handles a load up to 8kg.
The FOT86 also include a full range of accessories including a thread-on objective lens cover, two heavy-duty machined tube rings and a carry handle that accommodates a red-dot finder, a sturdy machined Vixen style dovetail bar for easy mount attachment, and a dovetail finder scope base on the focuser. It also comes with a hard carry case with a custom die-cut foam insert to help with safe transport and convenient storage.
As an indication of the rigor of optical design and manufacture, each Founder Optics telescope comes with a Ronchi test and optical test certificate matched to the telescope’s serial number.
Notes:
- The ZWO EAF cannot be mounted on this scope's focuser as the large focus lock knob gets in the way.
- The focus lock knob is useful for tightening the focuser drawtube but is not a 100% lock as claimed by the manufacturer.
- The female thread on the 2" nosepiece of the included flattener is M48x0.6. This can only accept Orion brand filters which use this thread. You cannot use this end with filters made by others that use the standard M48x0.75 thread.
About Founder Optics
The Founder Optics brand originated in Japan with a design from a renowened Japanese telescope designer. The quality of design is acknowledged by the Japanese amateur astronomy market which includes many optical and imaging experts.
Founder Optics telescope are now manufactured by a well-known Taiwan telescope manufacturer with over 45 years of experience in producing optical products. Founder Optics delivers the highest quality control for every unit through a series of strict collimation tests and Ronchi tests. And with decades of experience in high precision machining processes and assembly techniques, Founder Optics delivers products with a higher level of value with amazing performance. Every unit comes with a quality certification card and serial number to guarantee quality when shipped out of factory. By doing so, customers are assured confidence when buying with Founder Optics.
Whether you are imaging or observing visually, Founder Optics aims to bring users the best possible experience with bright, crystal clear, and superbly sharp images with close to zero aberration, zero distortion, and with the highest contrast.
Specifications:
- Optical System: 2 ED APO Triplet (Fully Separated Elements)
- Clear Aperture: 86mm
- Focal Length: 560mm
- Image Circle (with Field Flattener): 44mm
- Focuser: 2’’ Rack & Pinion Patented Focuser (Twist Lock)
- Weight:
- OTA 3.5kg
- With Tube Ring: 4.6kg
- Diameter of Main Tube: 90mm
- Dew Shield OD: 109mm
- Tube Length:
- Fully Retracted: 456mm
- Fully Extended: 545mm
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Telescope Focal Length | 501 - 600mm |
| Hide Found a better Shipped Price on Frontend? | No |
- High Quality Aluminum Case with Key
- FOT86 with Patented 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)
- Founder Optics FOT86 ED triplet refractor with 86mm aperture and f/6.5 focal ratio with premium optics for deep sky imaging and visual observing
- ‘Super Triplet’ design and included field flattener ensure flat field and minimal false color and distortion across a 44mm image circle
- Rotatable 2” premium hybrid rack-and-pinion focuser with twist lock
- Includes mounting rings, Vixen dovetail, carrying handle, optical test report, dust cap, cleaning cloth, and hard case
This premium 86 mm f/6.5 apochromatic triplet refractor from Founder Optics is designed to deliver razor-sharp and color-free images for astrophotographers and visual observers. The objective includes two ED elements and, unlike most refractors on the market, all three lens components are widely spaced. This ‘Super Triplet’ design is found in only one other line of telescopes, the venerable Takahashi TOA series.
The Founder Optics FOT86 has a focal length of 560 mm and a relatively fast focal ratio of f/6.5. The scope includes a dedicated field flattener that’s compatible with both DSLR and mirrorless cameras and dedicated astronomy cameras up to a full-frame sensor size. The flattener comes with M42/T threads and includes an M48x0.75 adapter for the camera side.
This Founder Optics scope includes a 360-degree rotatable 2" hybrid rack-and-pinion dual speed focuser with a 11:1 focus ratio and a twist lock. It also includes a built-in focus lock knob and handles a load up to 8kg.
The FOT86 also include a full range of accessories including a thread-on objective lens cover, two heavy-duty machined tube rings and a carry handle that accommodates a red-dot finder, a sturdy machined Vixen style dovetail bar for easy mount attachment, and a dovetail finder scope base on the focuser. It also comes with a hard carry case with a custom die-cut foam insert to help with safe transport and convenient storage.
As an indication of the rigor of optical design and manufacture, each Founder Optics telescope comes with a Ronchi test and optical test certificate matched to the telescope’s serial number.
Notes:
- The ZWO EAF cannot be mounted on this scope's focuser as the large focus lock knob gets in the way.
- The focus lock knob is useful for tightening the focuser drawtube but is not a 100% lock as claimed by the manufacturer.
- The female thread on the 2" nosepiece of the included flattener is M48x0.6. This can only accept Orion brand filters which use this thread. You cannot use this end with filters made by others that use the standard M48x0.75 thread.
About Founder Optics
The Founder Optics brand originated in Japan with a design from a renowened Japanese telescope designer. The quality of design is acknowledged by the Japanese amateur astronomy market which includes many optical and imaging experts.
Founder Optics telescope are now manufactured by a well-known Taiwan telescope manufacturer with over 45 years of experience in producing optical products. Founder Optics delivers the highest quality control for every unit through a series of strict collimation tests and Ronchi tests. And with decades of experience in high precision machining processes and assembly techniques, Founder Optics delivers products with a higher level of value with amazing performance. Every unit comes with a quality certification card and serial number to guarantee quality when shipped out of factory. By doing so, customers are assured confidence when buying with Founder Optics.
Whether you are imaging or observing visually, Founder Optics aims to bring users the best possible experience with bright, crystal clear, and superbly sharp images with close to zero aberration, zero distortion, and with the highest contrast.
Specifications:
- Optical System: 2 ED APO Triplet (Fully Separated Elements)
- Clear Aperture: 86mm
- Focal Length: 560mm
- Image Circle (with Field Flattener): 44mm
- Focuser: 2’’ Rack & Pinion Patented Focuser (Twist Lock)
- Weight:
- OTA 3.5kg
- With Tube Ring: 4.6kg
- Diameter of Main Tube: 90mm
- Dew Shield OD: 109mm
- Tube Length:
- Fully Retracted: 456mm
- Fully Extended: 545mm
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Telescope Focal Length | 501 - 600mm |
| Hide Found a better Shipped Price on Frontend? | No |
- High Quality Aluminum Case with Key
- FOT86 with Patented 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)
Founder Optics FOT86 ED 86mm f/6 Triplet Apo Refractor Telescope