Products

Use this adapter to connect a T-ring or T-mount camera to a 1.25" focuser. Low profile design keeps backfocus short. Threaded for standard 1.25" fi...

Use this female T-thread to male T-thread spacer to extend standard T-thread adapters by 16.5mm.

Why a 1600GTO? Thirty plus years of mount design and building expertise has been employed to engineer and manufacture our new 1600GTO mount into th...

Why a 1600GTO? Thirty plus years of mount design and building expertise has been employed to engineer and manufacture our new 1600GTO mount into th...

Why a 1600GTO? Thirty plus years of mount design and building expertise has been employed to engineer and manufacture our new 1600GTO mount into th...

16mm Focal Length 68° Apparent Field Argon-purged Waterproof EMD Coatings 1.25" Barrel

This is a scaled down version of the "king of the field" 31mm Nagler Type 5.The new 16mm Nagler Type 5 is a smaller, lighter (0.45 lbs.), 1.25" onl...

Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 92° Series™ eyepieces are hyper-wide class oculars that can transfor...

The Televue 17mm Ethos Eyepiece provides a 100° apparent field for a true "spacewalk" view of the night sky. Distortion correction, high contrast a...

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

Modifying Al Nagler's patented Wide-Field eyepiece and adding high index glasses to the 6-element system, the Panoptic design approaches "Nagler" p...

This replacement adapter came with the original Starizona RASA8 Filter Slider converting the bottom M48 to M42 and adding 1mm to the Filter Slider ...

Our Advanced Convertible Barlow has a unique design that provides several configurations to increase the focal length of your telescope. It was de...

This adapter threads into the front (telescope side) threads of the SkyWatcher EvoStar ED focal reducer, allowing the reducer to be placed directly...

The Celestron 2” to 1.25” Adapter with Twist-Lock was designed for visual observers who use both 2” and 1.25” eyepieces regularly and need a quick...

2" diameter extension tube, adds 2" of length to optical path. Ideal for achieving focus with eyepieces or cameras. Features brass clamp ring.

Introducing Celestron's new 2" XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view...

Powermate Concept: While Barlows are powerful tools, the negative element defining them also limits their ability. The simple negative element Barl...

A portable guidebook for enjoying the night sky in 2023. 2023 Night Sky Almanac is the ideal resource for both novice and experienced sky watcher...

Nitrogen-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fin...

20mm Focal Length 68° Apparent Field Argon-purged Waterproof EMD Coatings 1.25" Barrel

Maximize your "spacewalk" experience with the 21mm Ethos. Transform your passage through the Milky Way with the 21mm’s nexus of contrast, power and...

The Nagler eyepiece represents the ultimate in the visual stargazing experience. With an 82-degree field of view, and tack-sharp, high-contrast opt...

24mm Focal Length 68° Apparent Field Argon-purged Waterproof EMD Coatings 1.25" Barrel

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

The newest Panoptic eyepiece is a 1.25" model with a weight of just 0.5 pounds. It has the same 68-degree apparent field as the other Panoptic eyep...

Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 100° Series™ eyepieces are hyper-wide class oculars that can transfo...

28mm Focal Length 68° Apparent Field Argon-purged Waterproof EMD Coatings 2" Barrel

Properly designed Barlows do wonderful things. First, they amplify power while retaining the eyepiece's eye-relief. Second, they slow the telescope...

Powermate Concept: While Barlows are powerful tools, the negative element defining them also limits their ability. The simple negative element Barl...

2" diameter extension tube, adds 3.5" of length to optical path. Ideal for achieving focus with eyepieces or cameras. Features brass clamp ring.

Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

The 7-element, Nagler Type 6 design is based on the original patented Nagler design. This new 7-element design update for the short focal length Na...

With 110°, the Ethos-SX has 21% more apparent FOV area than the 100° Ethos design. This permits a nice 62% power increase from a 6mm Ethos, while r...

Argon-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fine p...

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

This is the ultimate eyepiece! The 82-degree apparent field, edge-to-edge sharpness, and high contrast combine to deliver the most stunning views i...

If you are looking to move up to a higher quality eyepiece the Omni series provides more enhanced features in a wider selection of focal lengths. C...

34mm Focal Length 68° Apparent Field Argon-purged Waterproof EMD Coatings 2" Barrel

Modifying Al Nagler's patented Wide-Field eyepiece and adding high index glasses to the 6-element system, the Panoptic design approaches "Nagler" p...

THE AMATEUR STARGAZER'S ULTIMATE HOME COMPANION 365 Starry Nights is a unique and fascinating introduction to astronomy designed to give you a comp...

Clamp ring to mount 4" Tele Vue refractor.

This adapter adds 4.2mm to your Starizona Filter Slider making it 21.7mm in total length, compensating for the .7mm that a standard Filter adds to ...

Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical,...

M42 female to M42 male 4.5mm spacer.

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the new 3.7mm focal length to reach 110°, the same field size as the LEM Simulat...