BLX-1 Lithium Ion Rechargeable Battery

A high-capacity, 2,280 mAh lithium-ion battery. It can be recharged approximately 500 times. This battery is compatible with the OM-1 and HLD-10 Power Battery Holder.

This camera adapter for the Optec Lepus focal reducer is 50mm long and features a male M42 x 0.75mm T-thread making it suitable for any camera with 55mm depth-to-sensor or "flange focal distance". This adapter is equivalent to #19392-47.

Add a T-ring to mate with Canon, Nikon, or other DSLR or mirror-less cameras.

Affordable replacement diagonal for all telescopes with 1.25" focusers

• 90° viewing angle
• Comfortable viewing position
• For high-end telescope systems
• 5 Years warranty for Star Diagonals

High quality 2" telescope diagonal with 1.25" adaptor

The  SkyWatcher 2″ 90° Dielectric Star Diagonal is a high performance diagonal for high-end telescopes. The high reflectivity of the mirror (99%) offer a bright image without loosing luminosity. The high optical correction of the mirror (1/10 lambda) does not compromise the resolution or the contrast of the image.

The CNC body of the diagonal is both solid and elegant, the telescope side  connection in threaded for 2″ filters while the eyepiece side has a brass compression ring for not damaging the barrels of the eyepieces. The diagonal includes a 2″ to 1.25″ adapter also equipped with brass compression ring.

Please note this accessory can be used only on already telescopes equipped with a 2″ focuser.

Compact, foldable and pocket-friendly, the Nikon SPORTSTAR EX II 8x25 binoculars are made for effortless viewing on the go. As the next generation of Nikon’s popular SPORTSTAR EX series, it offers improved ergonomic performance and deliver sharp, vivid views for sightseeing and everyday exploration.

Highlights

• Convenient fold-up design fits most pockets and packs
• Built from sturdy aluminium alloy to protect against the occasional drop or bump.
• Coated in textured rubber armor for added protection and sure grip, wet or dry.
• Fully waterproof, making it ideal for paddlesports, boating, on the river and of course spending a day at of one our wonderful Australian beaches
• With 8x magnification, you can track birds and fast-moving sports easier with a wider view that brings more of the scene into focus.
• Multilayer-coated lenses. Cut through the glare and harsh backlighting for a high-contrast view with vibrant, lifelike colours.
• Fogproof construction. Especially useful when moving from a warm vehicle or building into the cold winter air.
• Turn-and-slide rubber eyecups with multi-click facilitate easy positioning of eyes at the correct eyepoint
• Large focusing knob. Smoothly dial in precise focus, even when wearing gloves.
  

Specifications

*1: Apparent field of view: Apparent field of view is calculated based on the ISO14132-1:2015 standard. *2: Folded.

New, larger version of some our most popular quality binoculars

Experience stargazing, marine adventures, and birdwatching like never before. The MONARCH M5 10x50 delivers the lightest 50 mm ED glass binoculars in its class*, producing high-resolution views with natural colour fidelity. Discover the world in unmatched realism and detail.

Highlights

• Lightest* body among 50mm-diameter objective lens  binoculars employing extra-low dispersion (ED) glass
• Large-diameter objective lenses deliver dynamic views
  Stylish, refined exterior design
• All lenses and prisms are multilayer-coated for brighter images
• Dielectric high-reflective multilayer and phase-correction coatings are employed
• Waterproof (up to 1m/3.3 ft. for 10 minutes) and fog-free with O-ring seals and nitrogen gas
• Long eye relief design ensures a clear field of view, even for eyeglass wearers
  Turn-and-slide rubber eyecups with multi-click facilitate easy positioning of eyes at the correct eyepoint
• Rubber armouring for shock resistance and a firm, comfortable grip
• Lightweight body uses fibreglass-reinforced polycarbonate resin
  

With well-balanced optical performance that delivers clear, natural colour fidelity, the MONARCH M5 binocular series is designed for easy, active use. The use of ED (extra-low dispersion) glass compensates chromatic aberration, delivering contrast-rich and true-to-life colour reproduction while offering excellent cost-performance. In addition, dielectric high-reflective multilayer prism coating and phase-correction coating provide a bright, clear field of view. Both lightweight and compact, these binoculars are comfortable to carry and ideal for all kinds of activities — from birdwatching to sports events and various other outdoor adventures in a wide range of environments.

Specifications

*1: Apparent field of view is calculated based on the ISO14132-1:2015 standard.
*2: When minimum magnification (10x) is selected.

*As of February 17th, 2026, among binoculars with a 50mm-diameter objective lens and 10× or 12× magnification employing an Extra-low Dispersion Lens, that had been released at that time. Based on Nikon Vision research.

New larger version of some our most popular quality binoculars

Experience stargazing, marine adventures, and birdwatching like never before. The MONARCH M5 12x50 delivers the lightest 50 mm ED glass binoculars in its class*, producing high-resolution views with natural colour fidelity. Discover the world in unmatched realism and detail.

Highlights

• Lightest* body among 50mm-diameter objective lens  binoculars employing extra-low dispersion (ED) glass
• Large-diameter objective lenses deliver dynamic views
  Stylish, refined exterior design
• All lenses and prisms are multilayer-coated for brighter images
• Dielectric high-reflective multilayer and phase-correction coatings are employed
• Waterproof (up to 1m for 10 minutes) and fog-free with O-ring seals and nitrogen gas
• Long eye relief design ensures a clear field of view, even for eyeglass wearers
  Turn-and-slide rubber eyecups with multi-click facilitate easy positioning of eyes at the correct eyepoint
• Rubber armouring for shock resistance and a firm, comfortable grip
• Lightweight body uses fibreglass-reinforced polycarbonate resin
  

With well-balanced optical performance that delivers clear, natural colour fidelity, the MONARCH M5 binocular series is designed for easy, active use. The use of ED (extra-low dispersion) glass compensates chromatic aberration, delivering contrast-rich and true-to-life colour reproduction while offering excellent cost-performance. In addition, dielectric high-reflective multilayer prism coating and phase-correction coating provide a bright, clear field of view. Both lightweight and compact, these binoculars are comfortable to carry and ideal for all kinds of activities — from birdwatching to sports events and various other outdoor adventures in a wide range of environments.

Specifications

*1: Apparent field of view is calculated based on the ISO14132-1:2015 standard.
*2: When minimum magnification (10x) is selected.

*As of February 17th, 2026, among binoculars with a 50mm-diameter objective lens and 10× or 12× magnification employing an Extra-low Dispersion Lens, that had been released at that time. Based on Nikon Vision research.

• Binoviewers improve views dramatically, producing a three dimensional effect that you’ll love!
• Using two eyes for observing instead of one lets you see more detail, reduces eye fatigue, and increases contrast
• For use with catadioptric telescopes and other telescopes with sufficient back focus
• Includes an aluminum carry case with foam-lined interior
• Requires a matching pair of 1.25” eyepieces, sold separately

Introducing the OM-3 Astro

Experience creative freedom redefined under open skies. The OM SYSTEM OM-3 ASTRO is a dedicated astrophotography camera designed to push beyond daylight, capturing stars, galaxies, red nebulas, and nightscapes with confidence and precision. From glowing horizons to silent, remote dark skies, it lets you explore the universe and your creativity, wherever the night takes you.

Dedicated power for astrophotography

A dedicated astrophotography camera engineered to capture faint Hα light, from expansive starscapes to deep-sky detail.

Non-Illuminated Right Angle Correct Image Finderscope

The Celestron 9x50 Right Angle Correct Image (RACI) Finder is a great upgrade to the standard finderscopes included with many Schmidt-Cassegrain telescopes. The generous 50mm aperture produces bright, sharp images with a magnification of 9x and a five-degree apparent field of view. Meanwhile, the right-angle, correct-image design keeps objects right-side-up and correctly oriented left-to-right, making it easier to find objects and track them as they drift through the field of view. You can rotate the eyepiece module left or right to find the perfect viewing angle based on your setup.

The double-crosshair reticle etched in the eyepiece makes it easy to center an object, whether you are aligning your computerized telescope or finding deep-sky objects on your own. The reticle can be focused separately from the finder itself. 

The Celestron 9x50 RACI Finder comes with a sturdy bracket consisting of two rings and an integrated dovetail. The oversized thumbscrews make adjusting the finder's alignment easy. The dovetail allows for easy attachment to and removal from most Schmidt-Cassegrain and EdgeHD optical tube assemblies without affecting the finderscope's alignment. The eyepiece also features an attachment point for an aftermarket M8x1.25 thread-in illuminator.

Bintel Lunar New Year Accessory Bundle

Celebrate the Moon with a trio of accessories designed to enhance your lunar observing experience. The Bintel Lunar New Year Accessory Bundle is perfect for anyone who wants to see more detail and enjoy longer, more comfortable viewing sessions.

This bundle includes:

Celestron T-Adapter-Barlow Lens Universal (1.25")
A flexible 2× Barlow and T-adapter all in one. Use it to double the magnification of your 1.25" eyepieces, giving you closer views of lunar craters, mountains, and valleys. Compact and lightweight, it lets you explore the Moon and planets in more detail without complicated setups.

Celestron Moon Filter (1.25")
The Moon is bright and beautiful, but its glare can make details hard to see. This simple screw-on filter reduces brightness and improves contrast, helping your eyes relax and revealing subtle surface features. Perfect for evenings near the full Moon, and useful for bright planets or terrestrial scenes.

Orion Moon Map 260
A laminated, fold-out map showing over 260 lunar features, including craters, mountain ranges, valleys, and historic landing sites. Both correct-image and mirror-image views are included, making it easy to identify features through binoculars, a telescope, or even with the naked eye.

Together, these three accessories make the Bintel Lunar New Year Accessory Bundle the ideal kit for exploring the Moon. See more, understand what you’re seeing, and enjoy longer, more detailed lunar observing sessions.

The TMB Super Plossl Series

The TMB Super Plossl series is a clear upgrade over the basic eyepieces supplied with most telescopes, offering sharper images, better contrast, and improved build quality at an accessible price point.

Using a classic 4 element Plossl optical design and a 50 degree apparent field of view, these eyepieces deliver bright, well corrected views across the field. Fully multi coated optics enhance light transmission and reduce internal reflections, helping planetary detail stand out more clearly and deep sky objects appear cleaner and more defined compared to standard kit eyepieces.

Each eyepiece features a standard 1.25 inch barrel with filter threads, solid metal construction, and protective caps, making them a dependable addition to any observing kit.

The TMB 40mm Super Plossl

The 40mm TMB Super Plossl provides the lowest magnification in the range, producing bright, relaxed views that are well suited to large extended objects and longer focal length telescopes.

Eye relief is very generous, offering a comfortable viewing experience.

This focal length is particularly useful when a softer, lower power view is preferred or when maximising brightness for faint, diffuse targets.

TMB PlanetView Planetary Eyepieces:

The TMB PlanetView Planetary Eyepiece series is designed for high-magnification planetary and lunar observing, delivering sharp, high-contrast views with excellent eye comfort. Choosing the right focal length for your telescope typically provides a significant upgrade in magnification and fine detail compared to the stock eyepieces supplied with most telescopes, making planetary features clearer and easier to observe. Featuring a 5-element optical design and a wide 58° apparent field of view, these eyepieces offer a more immersive experience than traditional narrow-field planetary designs while maintaining the crisp detail needed for serious observing.

Fully multi-coated optics and internal baffling maximise light transmission and suppress stray reflections, improving contrast on subtle planetary features and fine lunar detail. The large eye lens and generous eye relief make these eyepieces comfortable to use, especially during long observing sessions or when wearing glasses.

Built with an all-metal housing and a fold-down rubber eyecup, TMB PlanetView eyepieces are robust, practical, and compatible with all standard 1.25" focusers and filters. They are also Bintel’s number one recommended first upgrade for most telescopes, offering one of the simplest and most noticeable improvements you can make to planetary and lunar performance.

The 3.2mm TMB PlanetView:

The TMB PlanetView 3.2mm Planetary Eyepiece is ideal for high-power planetary observing with short to medium focal length telescopes.

Works particularly well with:

• • Celestron StarSense Explorer DX 130AZ Newtonian Telescope

  • Celestron StarSense Explorer 130mm Tabletop Dobsonian Telescope

Specs:

Hubble UL32 – 32" Lightweight Reflector Telescope

The Hubble UL32sg is a flagship 32-inch Dobsonian telescope designed for serious deep-sky observers, research-grade visual work, and advanced EAA applications. With a massive 32-inch primary mirror, the UL32sg delivers 16 times the light grasp of an 8-inch telescope and four times that of a 16-inch, revealing galaxies, nebulae, and fine structure at a level few instruments on Earth can match.

Despite its extraordinary aperture, the UL32sg is engineered to remain as compact and transportable as possible for its class. Fully assembled, the telescope weighs around 150 kg and features a modular, all-metal construction with sectional truss tubes and a folding altitude bearing structure. A real mirror box provides safe protection for the primary mirror during transport and storage.

Light, Strong, Compact and Still Portable

The UL32sg is built using precision-machined aluminium alloy components, extensively modelled with CAD and FEA to optimise structural rigidity while minimising weight. Eight rigid sectional truss tubes ensure excellent stiffness and collimation stability, even at extreme elevations.

While the UL32sg is not a casual backyard instrument, it remains one of the most compact and practical 32-inch class telescopes available, capable of being transported and assembled by a small team for dark-sky expeditions, observatories, and research installations.

Revolutionary Smart Go-To System

The UL32sg is supplied exclusively in a Smart Go-To configuration, built around the state-of-the-art OnStep control system. This advanced platform combines fully motorised Go-To, high-resolution encoders, and a revolutionary plate-solving smart finder for unmatched pointing accuracy.

Using the system is simple: select a target via the smart hand controller or third-party software such as SkySafari or Stellarium, then with a single button press the telescope captures an image, plate-solves its position, and automatically refines its pointing until the target is perfectly centred.

The system supports automated star alignment, automated “Star Shows” such as Messier Marathons, intelligent routing to reduce slewing time by 30–50%, and full EAA live stacking for electronically assisted observing.

Connectivity includes built-in WiFi and Bluetooth, INDI and ASCOM drivers, real-time clock, spiral search, park/unpark, and full sidereal, lunar, and solar tracking rates. Control is available via smart hand controller, desktop software, or mobile apps on Windows, macOS, Linux, iOS, and Android.

Exclusive Sandwich Mirror Technology

The UL32sg uses a lightweight sandwich primary mirror designed to reach thermal equilibrium far faster than traditional solid mirrors. Rapid cooling dramatically reduces mirror seeing and internal turbulence, allowing the telescope to achieve its full optical potential much sooner in real-world conditions.

Unlike thick solid mirrors that may never stabilise during changing temperatures, the sandwich design delivers sharp, stable images without the need for active cooling systems, avoiding vibration and mechanical complexity.

Enhanced Optical Coatings

Both primary and secondary mirrors receive 96% enhanced dielectric coatings with multiple precision-controlled layers. These coatings maximise reflectivity, reduce scatter, and provide excellent chemical and mechanical durability, delivering bright, high-contrast images even at extreme magnifications.

Real Mirror Cell in a Real Mirror Box

The UL32sg features a fully engineered 27-point flotation mirror cell with sling and 90-degree pivoting lateral supports. This system prevents mirror deformation and eliminates astigmatism commonly caused by simpler collimation designs.

The independent three-point rod-end collimation system allows precise adjustment without stressing the mirror edge, maintaining optical integrity under all observing orientations.

Dual-Speed 2" Linear Bearing Crayford Focuser

The UL32sg is fitted with a precision 2-inch dual-speed linear bearing Crayford focuser, capable of handling heavy modern eyepieces and imaging equipment. The fine focus control provides ten times finer adjustment for critical focusing at high power or during EAA use, with approximately 50 mm of travel.

Specifications (UL16)

A new modern large Maksutov telescope for superb viewing and imaging

• 200 mm Maksutov Cassegrain flat field optics Edge to edge sharpness and contrast
• 2000 mm focal length at F10 Large 44 mm image height support
• Optional 0.7x focal reducer compatibility
• Compact well balanced OTA design

Overview

Available May 2026!

Discover why "Maks" are renowned for their sharp imaging and visual observation with the new Sky-Watcher Skymax 200DX Maksutov Cassegrain Telescope

The Sky-Watcher Skymax 200DX Maksutov Cassegrain Telescope is a premium 200 mm optical system built for astronomers and astrophotographers who want exceptional sharpness, strong contrast, and consistent field flatness across a large image circle.

Designed around an optimised flat field Maksutov Cassegrain layout, the Skymax 200DX delivers clean, accurate performance for detailed visual observation and high resolution imaging.

With an effective aperture of 200 mm and a focal length of 2000 mm at F10, this telescope excels at revealing fine surface detail on the Moon and planets while also delivering strong results on compact deep sky targets. Its advanced optical design helps suppress off axis coma and other aberrations, producing consistent star images from the centre of the field right through to the edge.

For imaging applications, the Skymax 200DX includes a generous 44 mm image height, making it well suited for modern large sensor cameras and full frame astrophotography workflows. For users wanting wider fields and faster exposure times, an optional 0.7x focal reducer is available, expanding flexibility without taking away from the telescope’s refined optical purpose.

Despite its high performance optical profile, the Skymax 200DX remains compact and well balanced, making it a practical option for permanent observatory setups or portable imaging rigs when paired with a suitably rated equatorial mount.

Specifications

NBM – Challenger/DX:

nanoblock is a micro sized building block from Japan.  Start building on a scale never seen before! This amazingly small micro sized block makes it possible to create detailed masterpieces from tiny animals and miniature musical instruments to architectural landmarks from around the globe. With exciting models to appeal to every personality, nanoblock is sure to captivate builders of all ages. 

Features:

- With between 450-800 blocks, each nanoblock Challenger set takes between 90-180 minutes to complete

- Includes detailed colour instructions

- Popular with boys and girls 12+ years

- Loved by the young and young at heart

- Collect them all!

Main Sensor

Guide Sensor

Start Your Astrophotography Journey with everything at your fingertips!
The ASI585MC/MM Air integrates imaging, guiding, and smart control, featuring ZWO's self-developed "Dual Sensor + ASIAir" integration technology. Say goodbye to complex setups and enjoy a seamless, hassle-free astrophotography experience.

Effortlessly Connect Multiple Devices
4x USB 2.0, 2x DC12V 10A, 1x USB Type-C
USB 2.0 ports for your focuser, filter wheel, and mount; DC 12V 10A input/output ports for reliable power; USB Type-C port for fast file transfers—you can focus on capturing stunning images without worrying about connectivity issues.

Ample Storage, Explore Without Limits
With 256GB eMMC storage, the ASI585MC/MM Air allows you to capture multiple targets with ease. Rigorously tested with over 300 benchmarks, it ensures system stability. Plus, the USB 2.0 ports support up to 1TB external storage, giving you plenty of room for all your astrophotography needs.

Starvis 2  4K Sensor
Image Sensor Technology Beyond the Human Eye's Sensitivity
Equipped with the upgraded STARVIS 2 image sensor, supporting a higher dynamic range.
With this technology, the sensitivity and signal-to-noise ratio of the ASI585MC/MM Air are greatly enhanced, delivering exceptional image quality.

No Amp Glow
The ASI585MC/MM Air exhibits zero amp glow, which ensures extremely clean dark-field images. No matter how long the exposure and how the gain value, you can easily capture high-quality astrophotographs.

300s exposure image

Note: It is implemented directly at the hardware level, it does not require software control.

Dual-Band Wi-Fi for Stable Signal
Experience unparalleled connectivity with our enhanced external dual-band antenna, supporting both 2.4G and 5G frequencies and offering stable and smooth usage within 20 meters.

Cross-Platform Device Control
Except from ASIAIR App, ASI2600MC Air can also wirelessly connect to ZWO’s proprietary PC control software, ASIStudio, and also other 3rd-party PC software. 3rd-party software can be controlled through ASCOM extended protocol Alpaca (requires ASCOM Platform version V6.6 or higher).

(Note: 2.4G has a longer transmission distance but slightly slower speed compared to 5G. The 20-meter range is based on multiple tests of the 2.4G frequency in open areas.)

Get Fully Control of Your Entire Rig at Your Fingertips
Powered by ZWO’s patented technologies, featuring smartphone connectivity and OTA upgrades for a seamless astrophotography experience.
Connect, capture, and upgrade effortlessly — astrophotography made smart and fun.

Instant Post-Processing and Sharing
Live stack is supported during your imaging session. You may also make adjustments to brightness, contrast and others on the final image. Instantly share your masterpieces on social media platforms and astronomy communities, making your work stand out.

Efficient Cooling, Superior Image Quality
The two-stage TEC cooling system lowers the CMOS sensor temperature by 30°C–35°C below ambient, effectively reducing dark current generation.
Even during long exposures of several hundred seconds, noise remains minimal.
Note: The lower the ambient temperature, the smaller the cooling differential.

*Based on tests at 30°C ambient temperature. Cooling efficiency decreases as ambient temperature drops. While uncommon in Australia, operation below –20°C is not recommended.

Low Read Noise, High Dynamic Range
The camera has a built-in HCG mode, which can effectively reduce readout noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain. When the gain is 200, the HCG mode is automatically turned on and the Dynamic range reaches a level close to 12bit.The readout noise is as low as 0.7e.

ASI585MC Air

ASI585MM Air

QE
After "ZWO Laboratory" calculation, the peak quantum efficiency of ASI585MC Air is 88%. The peak quantum efficiency of ASI585MM Air is 91%
*Data source: This data is from ZWO Laboratory. The actual quantum efficiency peak value is subject to real-world data.

ASI585MC Air

ASI585MM Air

Dark Current

Power Consumption

Built-in Filters
The ASI585MC Air camera features a UV-IR Cut filter in front of the sensor, serving as a protective window that blocks infrared light.

The ASI585MM Air camera is equipped with an AR (Anti-Reflective) coated protective window, which enhances light transmission and minimizes reflections.

Camera Specification

Image Circle Compatibility Reference
Please refer to the diagram below to understand how ASI585MC/MM Air cameras match with various telescope image circles.

ZWO Air cameras are compatible with telescopes that support APS-C or larger image formats.
Note: When using a telescope with an APS-C image circle, you may notice slight distortion in the guide star. If you’re looking for more accurate and stable guiding performance, we recommend using a telescope with a full-frame or larger image circle.

Camera Details

Connection Diagram

Mechanical Diagram

What’s in the box?

The GPO PASSION™ 20-60×85 APO delivers professional-grade optics for serious observers. Its 85 mm objective and angled eyepiece design support extended viewing sessions without fatigue. The APO lens system, featuring ED glass and aspherical elements—combined with GPObright™ multi-layer coatings and dielectric prism technology produces exceptionally sharp, high-contrast images with minimal colour fringing across the entire zoom range. A generous exit pupil ensures bright, clear performance in low-light conditions and at dusk. The wide field of view and short close focus make target acquisition swift and precise, making this spotting scope ideal for ornithology, wildlife observation, and digiscoping applications where optical excellence matters.

The GPO PASSION™ 16-48×65 APO delivers professional-grade optics in a remarkably compact package. Its 16–48× magnification range and 65 mm objective lens provide exceptional clarity across varied viewing distances, while the APO design minimises chromatic aberration for pristine image quality. Nitrogen-filled and fully waterproof, this scope withstands demanding field conditions. The magnesium housing with ArmorX grip ensures durability and confident handling, whilst the integrated tripod adapter simplifies setup. At its class weight, it's ideal for mobile observers who refuse to compromise on performance. Includes stay-on carrying case.

High-performance wide angle eyepieces for ultra clear astronomical viewing - 85° Apparent Angle of View

The PENTAX XW series 85° Apparent Angle combined with 20mm of Eye Relief produces some the widest and most relaxed viewing possible with your telescope. 

High-Grade Optics for Exceptional Image Quality

The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.

PENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency

All lens surfaces that come in contact with air are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating, to offer the light transmission efficiency of more than 90 percent (an astonishing 96 percent at 550nm) over the visible light spectrum.

Advanced Light-Shielding Technology for Improved Image Contrast

Thanks to PENTAX’s advanced computer simulation technology, the XW series features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image.

Sleeve Size and Eyecup Design

The XW series provides a choice of two diameter to suit practically all telescope fousers: American-standard 31.7mm version (1.25"), and 50.8mm (2") version.

 When you remove the screw-on eyecup, it also provides a screw thread with a 43mm diameter and a 0.75 pitch

Specifications

High-performance wide angle eyepieces for ultra clear astronomical viewing - 85° Apparent Angle of View

The PENTAX XW series 85° Apparent Angle combined with 20mm of Eye Relief produces some the widest and most relaxed viewing possible with your telescope. 

High-Grade Optics for Exceptional Image Quality

The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.

PENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency

All lens surfaces that come in contact with air are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating, to offer the light transmission efficiency of more than 90 percent (an astonishing 96 percent at 550nm) over the visible light spectrum.

Advanced Light-Shielding Technology for Improved Image Contrast

Thanks to PENTAX’s advanced computer simulation technology, the XW series features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image.

Sleeve Size and Eyecup Design

The XW series provides a choice of two diameter to suit practically all telescope fousers: American-standard 31.7mm version (1.25"), and 50.8mm (2") version.

 When you remove the screw-on eyecup, it also provides a screw thread with a 43mm diameter and a 0.75 pitch

Specifications

This wide-angle 5mm Nikon eyepiece combines a flat, wide field of view with a high eyepoint for easy viewing. The rubber eyecup and light-blocking hood make it easy to look through and block out ambient light, allowing you to enjoy astronomical observation in comfort.

Main Features

• With an apparent field of view of 72°, you can enjoy a wider actual field of view at the same magnification, allowing you to enjoy the impressiveness of outer space.
• Rather than focusing on numerical values, the eye relief is designed with performance as the priority, and the lens barrel is designed with ease of use in mind, ensuring a nearly constant distance from the end of the eyepiece to the eyepoint. Furthermore , exit pupil aberrations are effectively eliminated, minimizing blackout and coloration when the eye moves away from the eyepoint, improving usability.
• This advanced optical design combines a wide field of view with a flat image. It is compatible with the brightest F-numbers of the astronomical telescope objective optical system it is paired with. The NAV-5SW in particular is compatible with optical systems up to f/4. It improves the peripheral image without compromising the central image, minimizing field curvature and astigmatism.
• To eliminate stray light that is harmful to observation, light-shielding diaphragms, light-shielding wires, and black paint are used in appropriate locations, and the lens surfaces are multi-coated to reduce harmful reflections and improve transmittance, among other measures.
• The mounting diameter is 31.7mm or 1.25", the standard "American size." It can be used with various telescopes. It also features a parfocal design, with the flange at the focal point. *Please make sure the eyepiece insertion diameter of your telescope is 31.7mm.
• The eyecup rubber that comes into direct contact with the skin is made of skin-friendly silicone rubber, and features an easy-to-grip knurled design reminiscent of Nikkor lenses.
• A silicone rubber light-shielding hood is used to prevent external light disturbances when observing at high magnifications where close contact is not possible, or in places such as parking lots. Unlike the usual "horn-shaped" hood, it has a unique shape that can be used by people who wear glasses, and is flexible enough to reduce the transmission of vibrations. It is detachable and can be removed when not needed. 
• Drip-proof construction with rubber sealing to prevent night dew from seeping in.
• The optional TSA-1 telescope attachment allows for digiscoping. The FSB series compact digital camera bracket allows for collimated photography. It can also be used for lunar and planetary photography, expanding the scope of your photography.
• The innovative eyepiece converter "EiC-16" (sold separately) enhances the performance of NAV-SW eyepieces. The "EiC-16" converts the magnification to 1.6x. Unlike conventional Barlow lenses, the optical design optimized for the NAV-SW series increases magnification without sacrificing sharpness in the centre, further improving image flatness.
• The mounting system is a 31.7mm/1.25" chuck with minimal decentering error.

Specifications

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