Sky-Watcher Evostar ED72 refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-black skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. Sky-Watcher Evostar refractors are the logical choice for the discriminating amateur astronomer looking for an investment in advanced instrumentation for exceptional viewing and astrophotography, the focus position is designed for use with a camera.

This telescope is designed to be used as an astrograph, it short focal length make it ideal for imaging large star fields without the need for a large astronomical mount. However, we suggest the Skywatcher 0.85x Reducer / Corrector to flatten the wide field for better imaging results

It is also a perfect scope for Autoguiding with the addition of the ZWO ASI 120Mini Guider camera

FEATURES:

The Sky-Watcher family of EvoStar ED telescopes started with the 80ED, a value for money favourite of astronomers all over the world.

The new Sky-Watcher Evolux 82ED refractor is perfect for those looking for a compact and ultra-transportable instrument ideal for Wide Field, Deepsky astrophotography.

An optional custom designed 0.90X reducer/ flattener is available as an option.

It flattens the field for pinpoint stars right out to the edges, whilst reducing the focal length to 480mm

The new EVOLUX 82ED continues this tradition with major enhancements including:

• Unparalleled levels of optic performance for an ED telescope
• Updated 2-lens element design
• New ED glass
• 82mm / f 6.4 (f5.8 with optional reducer)
• New optional re-designed dedicated reducer/field flattener for wider field of view and faster imaging
• Retractable integrated dewshield for improved handling
• Precision 61mm (2.4″) dual-speed focuser

Here's a great mount option:

Specifications:

• Focal length=530mm / f = 6.4
• Focal length = 480mm / f=5.8 with optional dedicated reducer/flattener for wider field of view
• Net Weight: 2.6kg
• Retractable dewshield for compact handling and storage
• High precision new 61mm (2.4″) dual-speed focuser
• Aluminium hard case
• V style Dovetail

The Sky-Watcher family of EvoStar ED telescopes started with the 80ED, a value for money favourite of astronomers all over the world.

The new Sky-Watcher Evolux 62ED refractor is perfect for those looking for a compact and ultra-transportable instrument ideal for Wide Field, Deepsky astrophotography.

An optional custom designed 0.90X reducer/ flattener is available as an option.

It flattens the field for pinpoint stars right out to the edges, whilst reducing the focal length to 360mm

The new EVOLUX 62ED continues this tradition with major enhancements including:

• Unparalleled levels of optic performance for an ED telescope
• Updated 2-lens element design
• New ED glass
• 62mm / f 6.5 (f5.8 with optional reducer)
• New optional re-designed dedicated reducer/field flattener for wider field of view and faster imaging
• Retractable integrated dewshield for improved handling
• Precision 61mm (2.4″) dual-speed focuser

Here's a great mount option:

Specifications:

• Focal length=400mm / f = 6.5
• Focal length = 360mm / f=5.8 with optional dedicated reducer/flattener for wider field of view
• Net Weight: 2.5kg
• Retractable dewshield for compact handling and storage
• High precision new 61mm (2.4″) dual-speed focuser
• Aluminium hard case
• V style Dovetail

Tele Vue NP127is

For 25 years, Tele Vue has pushed the boundaries of APO refractors, as well as eyepieces, to the recognised pinnacle of performance. The Tele Vue NP127is retains the exemplary wide field and planetary visual capability while adding new features to make imaging easier and more flexible.

Tele Vue was determined to make the NP series optically, mechanically, and functionally as perfect as possible for imaging up to 50mm diagonal chips without penalty to its near-ideal visual operation.

By applying the developments created for the TeleVue60is to the new NP127is and then going beyond the results speak for themselves.

The NP127is maintains its 127mm f/5.2 optical specifications yet with a redesigned 4-element optical system. The larger rear lens group absolutely minimises vignetting in formats up to 50mm measured diagonally across the chip. An optional field corrector is available so the corners of the newly brightened edges are virtually as perfect as the centre of the field. To prevent restriction of the larger converging light cone the focuser has a 3" front aperture and a 2.4" rear aperture.

The new drawtube has features allowing quick changes from visual to imaging operation. While imaging cameras can be rotated without changing focus (just remember to do new flats!). It also has the capability to correct for any residual focal plane tilt so the imaging chip is square on to the light path.

The imaging insert ring is threaded to accept Tele Vue's new Imaging System accessories including large diameter extension tubes, optical accessories, and camera/CCD attachments all with mating threads.

TeleVue builds and tests the rack and pinion focuser to hold more than 5kg of weight, yet still permit extremely fine focusing control via a 10:1 dual-speed pinion assembly (measurable with the optional Digital Micrometer Kit). The optional Focusmate driver also permits electric motorised control of the focusing process. The new Focusmaster software interface allows this entire procedure to be completed from a PC or laptop.

Tele Vue has been known for producing visual instruments "even better than you imagined". The new NP127is is evidence that they aim to achieve the same with their imaging equipment

Tele Vue NP127is Specifications

After a short wait, the "re-tweaked" TV127is is available. Never ones to rest, Tele Vue took the opportunity to to make small but meaningful changes to their flagship model. Both the optical and mechanical designs have been revised to reduce atmospheric defocusing sensitivity. The new lens prescription delivers smaller spot sizes over a broader wavelength range than before, while a new stainless steel front cell helps provide better thermal stability in extreme climates. Advanced multi-coatings are applied to maximize contrast and transmission. Still the fastest in the industry, there is just no competitive comparison considering its f/5.2 speed and flat-field.

Standard features of Tele Vue 60 OTA include a 2-stage 1.25" focuser with quick-focus drawtube, plus fine-focus helical, exquisitely machined and anodized all-metal construction, and a sliding captive dew shield. Offering wide field, pristine, color free views throughout a wide range of magnification.

• 1.25" focuser accept in-line Porro Prism, 45° erectors or 60° and 90° diagonals
• Maximum True Field: 4.3° (great for terrestrial and astronomical use)
• Maximum Power: 180x (with Nagler™ 2-4mm Zoom - for lunar/planetary viewing)
• Adjustable dovetail balancing bar fits all camera tripods, Tele Vue Mounts and new mounting brackets for SCT's

It’s a super-finder, day/night scope with great telephoto and imaging capability for digital cameras. Optional padded carry bag available.

Specifications

TVP-1250 Kit includes

QBT-1006 Tele Vue Quik Point Basic

DPC-1250 Tele Vue 1.25" 90° Everbrite Diagonal

TVB-2403 Tele Vue TV60 Carry Bag

EAD-25.0 Tele Vue 25mm Plossl

TVP-6012 Kit Includes

QBT-1006 Tele Vue Quik Point Basic

DPC-6012 Tele Vue 1.25" 60° Everbrite Diagonal

TVB-2403 Tele Vue TV60 Carry Bag

EAD-25.0 Tele Vue 25mm Plossl

Reviews

Designed in Japan, Made in Taiwan 

Sharp Optical System & Performance

• Superb ED class for remarkable image clarity. Crystal clear, superb sharp, almost zero aberration and distortion.
• 2 ED Glasses S-FPL 53 & S-FPL 51 & Lanthanum - Fully Separated Triplet (FST)  
  Fully Multi-coated optics ensures maximum light transmission
• Impressive user experience, designed for both visual observation and astrophotography

Precision focusing & mechanical design throughout

• Finely CNC machining aluminium body and patented rack and pinion focuser for heavy loading 360 degree rotatable for photography
• Deluxe high-glossy anodizing finish
• Retractable sunshade
• PATENTED：US 8,693,092 B2 / Taiwan 1417570
  

Design

At the heart of the Founder Optics FOT016 is premium performance 3-element ED APO triplet refractor, designed by a famous optical designer in based in Japan. The optical performance is impressive as a two ED glass elements are employed.

Unlike most ED triplet telescopes which use only 1 ED glass element, Founder Optics adopted 2 ED glass of S-FPL 53 and S-FPL 51 to bring a remarkable image that you'll immediately spot with even a casual viewing. With two fluoro-crown ED glass elements and fully multi-coated optics, these Founder Optics refractors provide a crystal clear, superb sharp, zero aberration and distortion image to your eyes or camera sensor.

In addition, each element is fully separated or air spaced which is not common even among APO triplet telescopes. This offers further improvements to the already impressive optical quality. 

Quality

In order to complete this unique design, it requires a very high level machining and assembly capability. Founder Optics partner with an experienced factory located in Taiwan with over 50 years experience in precision manufacturing, especially for Japanese companies. 

Besides manufacturing know-how, the high standard of quality control is also crucial to producing FOT86 and FOT106 telescopes. This is recorded in a Quality Certification Card.

Every unit is thoroughly tested, and these unique records help customers understand the quality of their telescope. Founder Optics take their quality checking very seriously as they aim to offer the best triplet APO telescopes to BINTEL customers. 

Focuser - 2.7'' 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 handle linear travel of the focuser. Once the 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 directions. The design makes the focuser always paralleled the optics axis. Instead of pushing against the drawtube to eliminate focus shift while it’s focused. And it can handle up to 8kg as well for complex imaging trains.

Longer Traveling Distance– Suitable for a range of Photographing Accessories!

Unlike other focusers, the long travel 95mm provides more room for adjust for fine and accurate focus.  

It is compatibly for a wide range of photographic accessories, along with easy to use controls.  

Focuser Rotator Function 

Flexible rotated structure provides a convenience for user to have the best position to adjust focuser when observation and photography. The precision machining parts and assembly technique make a good collimation even rotate the focuser and rotator.

Loosen the rotator knob and focuser knob to rotate the focuser and rotator.

Solid, lockable Dew Shield

Built in sliding dew shield.  Three screws hold dew shield stable while imaging or observing while keeping it place during transport. 

Specifications:

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

Clear Aperture: 106mm

Focal Length: 636mm

Focal ratio: f/6

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: 113mm

Tube Length: Fully Retracted: 557mm/ Fully Extended: 650mm

What's in the Box:

1)  High Quality Aluminum Case with Key
2)  FOT106/ FOT86 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)  Field Flattener (M42) with Exchangeable M48 Adapter
8)  7’’ Vixen Type Mount Dovetail
9)  Quality Certification Card with Serial Number
10) Cleaning Cloth
11) Dust Caps (for Objective Lens)

Instruction FOT106 Manual 

Download here

New from Sky-Watcher - the smallest member of their Esprit range of APO triplet refractors

The Sky-Watcher 70mm Esprit 70EDX Triplet APO Refractor is a professional instrument for the most demanding and exacting astrophotographers. The air spaced apochromatic triplet lenses have exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.

Main Features:

• Air Spaced 70mm Apochromatic Triplet
• 490mm Focal Length
• Fully multi coated lenses
• Optional 0.92x Reducer Available

In The Box:

• 70/490 Apochromatic Refractor
• Retractable Dew Shield
• D Style dovetail Bar and rings w/handle
• Aluminium Foam-Lined Case

Specifications:

The ZWO FF65 APO is a refractive astrograph with a powerful flatfield optical design which saves you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves you time, allowing you to pay more attention to the image shooting itself.

The ZWO FF65 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super-high magnification eyepiece.

The whole design of the telescope is compact and lightweight. The OTA weighs only 2kg, and the full package with tube rings and other accessories weighs 2.8kg. It has an aperture of 65mm. The focal ratio is f/6.4 and the focal length is 416mm. Instead of the quadruplet structure of the other ZWO FF APO Refractors, the FF65 APO is a quintuplet, with two ed Glass elements that offer excellent control of Chromatic and other aberrations.

The ZWO FF65 APO supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 2.5" rigid focuser comes with a new-type 360°rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.

ZWO FF65 APO Main Features

Quintuplet air-spaced APO design - No need to calculate back focus

Small and round stars - with a central RMS radius of 2.5um

Various adapters - M68/ M54/ M48

Dual speed (1:10) focuser - Support both fine and coarse adjustment

No need for a separate field flattener - Self-flattening design

Supports full-frame cameras - Produces a 44mm image circle

Optional Focal Reducer -

Specifications

SKU: ZWO-FF65-APO

Superb optical performance thanks to Canon Optron, Inc. fluorite glass elements in the optical construction. The precise optical design results in an extremely sharp image with practically no chromatic aberrations.

Recommended for starry sky, nebula, star cluster, and planet observation.

Main Features

• Modular BORG Design
• Apochromat fluorite glass elements.
• Objective lens optical design: 2 elements in 2 groups, fluorite element, apochromat, fully multicoated.
• Erect prism (included) allows users to observe both on-ground objects and celestial bodies.
• 20mm and 9mm eyepieces included.
• Arca-Swiss Quick Release System tripod collar.
• Ultra-lightweight of 962 grams.
• Objective lenses and major parts are Made in Japan.

The BORG 107FL Telescope Set CR is the premium model BORG telescope, designed for professional astro-watchers. This telescope features a 600mm focal length objective lens that incorporates high-end apochromat fluorite glass elements from Canon Optron, Inc.

Axial chromatic aberrations are suppressed even further with the 107FL objective lens when matched against the 90FL. The BORG 107FL Telescope Set CR is constructed with a lightweight and compactable carbon fiber barrel. Arca-Swiss Quick Release base plates are included for tripod mounting. The BORG 107FL Telescope Set CR is recommended for starry sky, nebula, star cluster, and planet observation.

You can convert this telescope to tele lens by swapping the prism and eyepiece with a BORG camera mount adapter (sold separately).

Main Features

• Fluorite glass elements from Canon Optron, Inc. are incorporated in the optical design for ultimate resolution and minimal axial chromatic aberrations.
• Objective lens optical construction: 2 elements in 2 groups, fluorite apochromat, fully multicoated.
• Robust and beautiful carbon fiber barrel.
• BORG 80Ø barrel system.
• Rack & pinion focusing system.
• Erect prism (included) allows users to observe both on-ground objects and celestial bodies.
• 20mm and 9mm eyepieces included.
• Super lightweight at 3.7 kilograms (including accessories).
• Arca-Swiss Quick Release System tripod plate.
• Objective lenses and major parts are Made in Japan.

'CR' stands for carbon fiber barrel and rack & pinion focusing system.

Camera mount adapters and other camera components are sold separately.

Specifications

New Sky-Watcher 150EDX APO Telescope - redesigned body with famous Esprit optics

**Due in late September/August**

Highlights:

• Air Spaced Apochromatic Triplet
• FPL-53 extra low dispersion glass
• Zero detectable colour fringing even on bright objects
• Diffraction limited optics
• Fully multi coated lenses
• 3″ CNC machined 11:1 dual speed linear power focuser – rotatable
• Indexed focuser tube
• Knife-edge baffled system to enhance contrast

The Sky-Watcher 150mm Esprit 150ED Triplet APO Refractor is a high-end  instrument for astro-photographers seeking quality images that only a telescope of this size and optical design can produce. It's also ideal for extended visual observations of deep-space objects due to its remarkable contrast and light gathering ability.

The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.

A 2-element field flattener is available separately to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.  Designed with photography in mind, it sits on two tracks above and below the barrel to prevent flexure with a heavy camera attached, and is fully rotatable to perfectly frame a target on the sensor.

In The Box:

• 150/1050 Apochromatic Refractor
• Fixed Dew Shield
• 2″ Dielectric Star Diagonal
• 9×50 Right Angled Erect Image Diagonal
• D Style dovetail Bar
• 2″ to 1.25″ Eyepiece Adaptor
• Aluminium Foam-Lined Case

SPECIFICATIONS

Tele Vue NP101is Specifications

The ZWO FF80 APO is a refractive astrograph with a powerful flatfield optical design which saves you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves you time, allowing you to pay more attention to the image shooting itself.

The ZWO FF80 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super-high magnification eyepiece.

The whole design of the telescope is compact and lightweight. The OTA weighs only 3.9kg, and the full package with tube rings and other accessories weighs 4.7kg. It has an aperture of 80mm. The focal ratio is f/7.5 and the focal length is 600mm.

The ZWO FF80 APO adopts a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 3" rigid focuser comes with a new-type 360°rotator with scales and a finder base. M76, M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.

ZWO FF80 APO Main Features

Quadruplet air-spaced APO design - No need to calculate back focus

Small and round stars - with a central RMS radius of 3um

Various adapters - M76/ M68/ M54/ M48

Dual speed (1:10) focuser - Support both fine and coarse adjustment

No need for a separate field flattener - Self-flattening design

Supports full-frame cameras - Produces a 44mm image circle

Focal reducer -

Specifications

SKU: ZWO-FF80-APO

The ZWO FF130APO is a refractive astrograph with a powerful flatfield optical design which saves you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves you time, allowing you to pay more attention to the image shooting itself.

Compared to the ZWO FF107 APO, the ZWO FF130 APO has a larger size. The aperture is 23mm larger. The focal length at f7/7 is also longer, this will yield higher details and slightly higher magnifications but with a field of view suitable for all deep-ky objects. The longer focal length will be especially effective on planetary and larger deep-sky objects which, when combined with the larger 130mm aperture, will provide stunning details in a reasonable time.

The ZWO FF130 APO with its quadruplet lens structure which contains two pieces of ED glass will control chromatic and other aberrations. With its self-flattening design, the ZWO FF130 APO offers strong advantages in astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion on the peripheral stars, and its central RMS radius is less than 2 microns.

The OTA weighs only 10.5 kg, and the full package with tube rings and other accessories weighs 12.5kg. The 3.4″ rigid focuser comes with a new-type 360°rotator with scales and a finder base. M86, M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters. When used with the 3" 0.7x flat-field reducer, the telescope can reach a focal ratio of f/5.4 and a focal length of 700mm, effectively reducing exposure time. The Multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. standard KLOsmandy dovetail plate, together with sturdy double rings. It is perfectly suitable for viewing and shooting.

ZWO FF130 APO Main Features

Quadruplet air-spaced APO design – No need to calculate back focus

Small and round stars – with a central RMS radius of less than 2um

Various adapters – M86/ M68/ M54/ M48

Dual speed (1:10) focuser – Support both fine and coarse adjustment

No need for a separate field flattener – Self-flattening design

Supports medium-frame cameras – Produces a 60mm image circle

Focal Reducer -

Specifications

The ZWO FF107 APO is a refractive astrograph with a powerful flatfield optical design which saves you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves you time, allowing you to pay more attention to the image shooting itself.

The ZWO FF107 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super-high magnification eyepiece.

The whole design of the telescope is compact and lightweight. The OTA weighs only 5.7kg, and the full package with tube rings and other accessories weighs 6.9kg. It has an aperture of 107mm. The focal ratio is f/7 and the focal length is 749mm.

The ZWO FF107 APO adopts a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 3″ rigid focuser comes with a new-type 360°rotator with scales and a finder base. M86, M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.

ZWO FF107 APO Main Features

Quadruplet air-spaced APO design – No need to calculate back focus

Small and round stars – with a central RMS radius of 3um

Various adapters – M86/ M68/ M54/ M48

Dual speed (1:10) focuser – Support both fine and coarse adjustment

No need for a separate field flattener – Self-flattening design

Supports full-frame cameras – Produces a 44mm image circle

Focal Reducer -

Specifications

SKU: ZWO-FF107-APO

Pictured Telescope is a prototype. (binoviewer not included)

• The APO140FL F/9.6 features an air-spaced apochromatic-doublet objective with a Fluorite (CaF2) rear element that results in a lighter objective.
• The objective weighs about 2.5 lbs., compared to 5 lbs. for the APO140FL F/7 version, allowing it to come to temperature more quickly.
• Starting 2025, the objective includes anti-reflective and hydrophobic coatings for easier cleaning and maintenance.
• Housed in an aluminum cell, it provides excellent thermoregulation while remaining lightweight and strong.
• The optical assembly is inside a lightweight aluminum tube with sharp-edged baffles.
• No collimation is needed after the scope leaves TEC.
• Comes equipped with a Starlight Instruments FTF#2545 Feather Touch Focuser with coarse and fine 9:1 planetary reduction.
• The 2" locking metal collet is temperature-insensitive and holds loads with precision and concentricity.

In classic refractor fashion, the TEC APO140FL F/9.6 is a no-compromise, no-frills design that lets the wonders of nature speak for themselves.

Recommended Accessories;

• Precision adjustable Tube Rings
• 9” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts.
• Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
• TEC Transportation Case that eases transport between observation locations.
• TEC Compact Case for easy lifting and transportation.
• 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
  

Testing and Quality Assurance

TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and TEC then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach TEC's expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.

While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.

Specifications

The BORG 90FL CR has exceptional optical resolution, accomplished by apochromat fluorite glass elements from Canon Optron, Inc. built in the optical design of the objective lens, and a super tele 500mm focal length and aperture of f/5.6.

A great piece of gear for observing celestial bodies and bird life in the Australian bush and city environments.

The 90mm front element diameter does not hamper the 90FL's extreme compact and lightweight capabilities thanks to the detachable carbon fiber made barrel. Recommended for starry sky, nebula, star cluster, and planet observation. You can convert this telescope to a tele lens by swapping the prism and eyepiece with a BORG camera mount adapter (sold separately).

• Objective lens equipped with apochromat fluorite glass elements from Canon Optron, Inc.
• Objective lens optical design: 2 elements in 2 groups, fluorite, apochromat, fully multicoated.
• Robust and beautiful carbon fiber barrel.
• BORG 80Ø barrel system.
• Rack & pinion focusing system.
• Erect prism (included) allows users to observe both on-ground objects and celestial bodies.
• 20mm and 9mm eyepieces included.
• Lightweight construction of 3 kilograms (including accessories).
• Arca-Swiss Quick Release System tripod plate.
• Objective lenses and major parts are Made in Japan.

'CR' stands for carbon fiber barrel and rack & pinion focusing system.

Camera mount adapters and other camera components are sold separately.

Main Features

New Sky-Watcher 80EDX APO Telescope - redesigned body with famous Esprit optics

**Have a chat with us about availability**

Highlights:

• Air Spaced 80mm Apochromatic Triplet (APO)
• FPL-53 extra low dispersion glass
• Zero detectable colour fringing even on bright objects
• Diffraction limited optics
• Fully multi coated lenses
• 3″ CNC machined 11:1 dual speed linear power focuser – rotatable
• Indexed focuser tube
• Knife-edge baffled system to enhance contrast

The Sky-Watcher 80mm Esprit 80EDX Triplet APO Refractor is a highly portable instrument, while still having the imaging capabilities to deliver deep-sky astro photos of stunning quality. It's especially suited for those seeking wide field images and visual observations. 

The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.

A 2-element field flattener is available separately to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.

In The Box:

• 80/400 Apochromatic Refractor
• Rotatable focuser adapter
• Collapsible Dew Shield
• 2″ Dielectric Star Diagonal
• 9×50 Right Angled Erect Image Diagonal
• D Style dovetail Bar
• 2″ to 1.25″ Eyepiece Adaptor
• Aluminium Foam-Lined Case

SPECIFICATIONS

New Sky-Watcher 120DX APO Telescope - redesigned body with famous Esprit optics

**Due in late July/August**

Highlights:

• Air Spaced 120mm Apochromatic Triplet
• FPL-53 extra low dispersion glass
• Zero detectable colour fringing even on bright objects
• Diffraction limited optics
• Fully multi coated lenses
• 3″ CNC machined 11:1 dual speed linear power focuser – rotatable
• Indexed focuser tube
• Knife-edge baffled system to enhance contrast

The Sky-Watcher 120mm Esprit 120ED Triplet APO Refractor is a high-end yet portable instrument for astro-photographers seeking quality images that only a telescope of this size and optical design can produce. It's also ideal for extended visual observations of deep-space objects due to its remarkable contrast and light gathering ability.

The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.

Designed with photography in mind, it sits on two tracks above and below the barrel to prevent flexure with a heavy camera attached, and is fully rotatable to perfectly frame a target on the sensor.

In The Box:

• 120/840 Apochromatic Refractor
• Fixed Dew Shield
• 2″ Dielectric Star Diagonal
• 9×50 Right Angled Erect Image Diagonal
• D Style dovetail Bar
• 2″ to 1.25″ Eyepiece Adaptor
• Aluminium Foam-Lined Case

SPECIFICATIONS

New Sky-Watcher 100EDX APO Telescope - redesigned body with famous Esprit optics

Highlights:

• Air Spaced 100mm Apochromatic Triplet (APO)
• FPL-53 extra low dispersion glass
• Zero detectable colour fringing even on bright objects
• Diffraction limited optics
• Fully multi coated lenses
• 3″ CNC machined 11:1 dual speed linear power focuser – rotatable
• Indexed focuser tube
• Knife-edge baffled system to enhance contrast

The Sky-Watcher 100mm Esprit 1000EDX Triplet APO Refractor is a high-end instrument for astro-photographers seeking quality images, yet also need a telescope that can be easily transported.

The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.

A 2-element field flattener is available separately to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.

In The Box:

• 100/550 Apochromatic Refractor
• Fixed Dew Shield
• 2″ Dielectric Star Diagonal
• 9×50 Right Angled Erect Image Diagonal
• D Style dovetail Bar
• 2″ to 1.25″ Eyepiece Adaptor
• Aluminium Foam-Lined Case

SPECIFICATIONS

Our largest refractor, the APO250VT F/8.8 allows the observer to immerse themselves in the beauty of space. This observatory class instrument provides the best visual experience that TEC has to offer.

• The APO250VT F/8.8 features an air-spaced apochromatic-triplet objective with a Fluorite (CaF₂) middle element, resulting in color correction that is optimized for visual use and imaging. This air-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
• The objective is housed in an titanium cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
• The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
• Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
• Each APO250VT F/8.8 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
• The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
• Includes precision adjustable Tube Rings.
• Able to accommodate a wide variety of eyepieces.
• Recommended to be paired with a high capacity load mount and a stationary observation station.

In classic refractor fashion, the TEC APO250VT F/8.8 is a no compromise, no frills design that lets the wonders of nature speak for themselves. Please know that ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE

Recommended Accessories

• Adjustable Dovetail Plate and Semirings.
• 10×60 Baader Vario Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
• 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
• Gutekunst Compact Atmospheric Dispersion Corrector (ADC)

Testing and Quality Assurance

TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and we then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach Yuri’s expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.

While the objectives are fine-tuned under interferomerical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.

Our largest portable refractor, the APO180FL F/7 allows the observer to delve deep into the beauty of space.

• The APO180FL F/7 features an oil-spaced apochromatic-triplet objective with a Fluorite (CaF₂) middle element, resulting in color correction that is optimized for visual use and imaging. This oil-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
• The objective is housed in an aluminum cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
• The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
• Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
• Each APO180FL F/7 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
  • The APO180FL F/7 can be fitted with to other focuser models by request. Please contact TEC to confirm whether the desired focuser will fit with the desired TEC model
• The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
• It also comes equipped with a Focuser wheel for easy mount installation and direction.
• Available for purchase as a Binocular Telescope. This requires the purchase of 2 APO180FL F/7.
• Able to accommodate a wide variety of eyepieces and mounts.

In classic refractor fashion, the TEC APO180FL F/7 is a no compromise, no frills design that lets the wonders of nature speak for themselves. Please know that ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE.

Recommended Accessories;

• 12” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts. The larger size fits effortlessly with our larger models.
• Precision adjustable Tube Rings.
• Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
• 180mm Field Flattener prevents vignetting and ensures high quality imaging.
• 10×60 Baader Vario Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
• 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
• Gutekunst Compact Atmospheric Dispersion Corrector (ADC).

Testing and Quality Assurance

TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and we then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach Yuri’s expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.

While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.

Owing homage to one of TEC’s earliest designs, the APO140ED, the APO140FL F/7debuted in 2017 and has quickly become TEC’s most popular model.

• The APO140FL F/7 features an oil-spaced apochromatic-triplet objective with a Fluorite (CaF₂) middle element, resulting in color correction that is optimized for visual use and imaging. This oil-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
• The objective is housed in an aluminum cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
• The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
• Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
• Each APO140FL F/7 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
  • The APO140FL F/7 can be fitted with to other focuser models by request. Please contact TEC to confirm whether the desired focuser will fit with the desired TEC model.
• The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
• Able to accommodate a wide variety of eyepieces and mounts.

In classic refractor fashion, the TEC APO140FL F/7 is a no compromise, no frills design that lets the wonders of nature speak for themselves. ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE

Recommended Accessories;

• Precision adjustable Tube Rings
• 9” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts.
• Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
• TEC Transportation Case that eases transport between observation locations.
• TEC Compact Case for easy lifting and transportation.
• 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
  

Testing and Quality Assurance

TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and TEC then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach TEC's expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.

While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.

An extension of the highly popular APO140FL, the APO160FL F/7 allows the observer to delve deeper into the beauty of space.

• The TEC APO160FL F/7 features an oil-spaced apochromatic-triplet objective with a Fluorite (CaF₂) middle element, resulting in color correction that is optimized for visual use and imaging. This oil-spaced triplet design in combination with multi-layer coatings on all surfaces of the objective ensure maximal light transmission.
• The objective is housed in an aluminum cell, providing for excellent thermoregulation properties while remaining lightweight and strong.
• The optical assembly sits in a lightweight aluminum tube that utilizes anti-reflective coating and sharp-edged baffles throughout the interior and forget about collimation – after the scope leaves TEC, no adjustment is required.
• Further, the crisp all white assembly projects the elegant, handcrafted quality that TEC is known for. Expect deep contrast and rich, natural color out of this compact and timeless design.
• Each APO160FL F/7 comes equipped with a Starlight Instruments FTF#3545 Feather Touch Focuser that was designed in collaboration with TEC. This is Starlight Instruments’ largest rotating focuser with coarse and fine focusing 9:1 Planetary Reduction Assembly.
  • The APO160FL F/7 can be fitted with to other focuser models by request. Please contact TEC to confirm whether the desired focuser will fit with the desired TEC model.
• The 2” locking metal collet is insensitive to temperature fluctuations and holds loads with high precision and concentricity.
• It also comes equipped with a Focuser wheel for easy mount installation and direction.
• Available for purchase as a Binocular Telescope. This requires the purchase of 2 APO160FL F/7.
• Able to accommodate a wide variety of eyepieces and mounts.

In classic refractor fashion, the TEC APO160FL F/7 is a no compromise, no frills design that lets the wonders of nature speak for themselves.

Please know that ALL PRICES AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE

Recommended Accessories;

• Precision adjustable Tube Rings
• 12” Dovetail Plate and Carry Handle facilitate easy transportation and fit seamlessly with most mounts. The larger size fits effortlessly with our larger models.
• Focal Reducer Corrector converts the F/7 Ratio to F/6.2 with a 115mm back focus.
• 160mm Field Flattener with an 85mm back focus.
• 7×50 Vixen Finderscope with a TEC Finder Bracket and Base for Telescope mounting.
  

Testing and Quality Assurance

TEC Telescopes go through rigorous testing to ensure top quality performance. Newtonian Rings are used throughout the glass production process and TEC then use an interferometer to correct any remaining imperfections. Every telescope is then tested vigorously to reach the most optimum Strehl ratio possible. Rest assured that your telescope has been optimized to be as optically perfect as possible. If the objective does not reach TEC's expectations, the telescope will not be shipped. As a strict policy, TEC will not release telescope test reports.

While the objectives are fine-tuned under interferometrical control to meet the highest optical standards, cosmetic imperfections may exist in the objective and the tube assembly. Please rest assured that any imperfection in the telescope has been determined not to affect the optical performance.

Designed in Japan, Made in Taiwan 

Sharp Optical System & Performance

• Superb ED class for remarkable image clarity. Crystal clear, superb sharp, almost zero aberration and distortion.
• 2 ED Glasses S-FPL 53 & S-FPL 51 & Lanthanum - Fully Separated Triplet (FST)  
  Fully Multi-coated optics ensures maximum light transmission
• Impressive user experience, designed for both visual observation and astrophotography

Precision focusing & mechanical design throughout

• Finely CNC machining aluminium body and patented rack and pinion focuser for heavy loading 360 degree rotatable for photography
• Deluxe high-glossy anodizing finish
• Retractable sunshade
• PATENTED：US 8,693,092 B2 / Taiwan 1417570
  

Design

At the heart of the Founder Optics FOT86 is premium performance 3-element ED APO triplet refractor, designed by a famous optical designer in based in Japan. The optical performance is impressive as a two ED glass elements are employed.

Unlike most ED triplet telescopes which use only 1 ED glass element, Founder Optics adopted 2 ED glass of S-FPL 53 and S-FPL 51 to bring a remarkable image that you'll immediately spot with even a casual viewing. With two fluoro-crown ED glass elements and fully multi-coated optics, these Founder Optics refractors provide a crystal clear, superb sharp, zero aberration and distortion image to your eyes or camera sensor.

In addition, each element is fully separated or air spaced which is not common even among APO triplet telescopes. This offers further improvements to the already impressive optical quality. 

Quality

In order to complete this unique design, it requires a very high level machining and assembly capability. Founder Optics partner with an experienced factory located in Taiwan with over 50 years experience in precision manufacturing, especially for Japanese companies. 

Besides manufacturing know-how, the high standard of quality control is also crucial to producing FOT86 and FOT106 telescopes. This is recorded in a Quality Certification Card.

Every unit is thoroughly tested, and these unique records help customers understand the quality of their telescope. Founder Optics take their quality checking very seriously as they aim to offer the best triplet APO telescopes to BINTEL customers. 

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 handle linear travel of the focuser. Once the 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 directions. The design makes the focuser always paralleled the optics axis. Instead of pushing against the drawtube to eliminate focus shift while it’s focused. And it can handle up to 8kg as well for complex imaging trains.

Longer Traveling Distance– Suitable for a range of Photographing Accessories!

Unlike other focusers, the long travel 95mm provides more room for adjust for fine and accurate focus.  

It is compatibly for a wide range of photographic accessories, along with easy to use controls.  

Solid, lockable Dew Shield

Built in sliding dew shield.  Three screws hold dew shield stable while imaging or observing while keeping it place during transport. 

Specifications:

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

Clear Aperture: 86mm

Focal Length: 560mm

Image Circle (with Field Flattener): Ø44mm

Focuser: 2’’ 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

What's in the Box:

1)  High Quality Aluminium Case with Key
2)  FOT106/ FOT86 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)  Field Flattener (M42) with Exchangeable M48 Adapter
8)  7’’ Vixen Type Mount Dovetail
9)  Quality Certification Card with Serial Number
10) Cleaning Cloth
11) Dust Caps (for Objective Lens)

Instruction FOT86 Manual 

Download here