Telescope Optical Tube Assemblies - OTA

The Orion ShortTube 80 Refractor Telescope Optical Tube Assembly is ideal for use as a dedicated guide scope for guided astrophotography pursuits. ...

Capture spectacular wide-field deep sky images in seconds with Celestron's portable astrograph, the 8" Rowe-Ackermann Schmidt Astrograph (RASA). Th...

Sharpstar 76EDPH is the second arrival to the Sharpstar EDPH family. It has caught the spotlight for its aesthetic and streamline appeal since its ...

The upgraded 61EDPH II has inherited the strengths from its predecessor. It features triplet air-spaced APO lens design, and one of which is an ED(...

Meade 10" f/8 ACF Optical Tube Assembly #1008-80-01 with the Losmandy-style dovetail. The bare essentials for an unbeatable price. We've heard your...

Advanced Coma-Free LX200 Optical Tube comes with Meade's Ultra-High Transmission Coatings (UTHC), Oversized Low-Expansion Borosilicate Primary Mirr...

Whether you're looking to delve into the details of our solar system or explore inspiring deep sky treasures, the versatile FirstLight series has a...

Designed with the discerning astrophotographer in mind, Sky-Watcher's top-of-the-line Esprit refractors deliver the kind of imaging performance one...

The brand new 94EDPH is the third type of this Sharpstar EDPG family. Its aperture size is 94mm and the focal length is 517mm, thus the focal ratio...

Advanced Coma-Free LX200 Optical Tube comes with Meade's Ultra-High Transmission Coatings (UTHC), Oversized Low-Expansion Borosilicate Primary Mirr...

Building on the foundation of the popular Evostar line of refractors, Sky-Watcher has developed the all new Evolux. Designed for the savvy astropho...

Building on the foundation of the popular Evostar line of refractors, Sky-Watcher has developed the all new Evolux. Designed for the savvy astropho...

Study of the solar disk is now within the reach of the amateur astronomer. The P.S.T. represents the same technology and quality that goes into a S...

EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of...

EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of...

If you're seeking crisp, contrasty views with high levels of detail, look no further than the Skymax series, Sky-Watcher's premiere line of Maksuto...

The TeleVue TV85APO provides stunning 4.4° rich-field because of the combination of apochromatic doublet lens and special low-dispersion glass. Thi...

Sharpstar 140PH, a large-aperture APO astrograph, the very first in Sharpstar APO-series, finally comes to the market. It features pioneering doubl...

For 30 years, TeleVue has pushed the boundaries of APO refractors, as well as eyepieces, to the recognized pinnacle of performance. We were gratifi...

Following the excellent optical performance of its first FRA400/5.6, the FRA600/5.6 is an evolution of the FRA series, an upgraded lens has a 108mm...

The FRA, which stands for "FLATFIELD REFRACTIVE ASTRAGRAPH", is a refractive astrograph designed for built-in flat field correction. FRA also used ...

For the dedicated visual observer or imager seeking a top-of-the-line instrument to advance their capabilities and enjoyment in the hobby, the Orio...

Featuring two ED glass elements for remarkable true-color performance, the Orion EON 85mm ED-X2 Triplet Apo Refractor heralds a new era (or should ...

With exceptional optics, top-notch features and beautiful fit and finish, the Orion EON 115mm ED Triplet refractor telescope offers wide-field obse...

With two ED glass elements for remarkable true-colour performance, the Orion EON 104mm f/6.25 ED-X2 Triplet is certain to satisfy your "apo" appeti...

Here's one of our staff-favourite telescopes that is especially popular with astrophotography enthusiasts, the 80mm apochromatic triplet Orion ED80...

The Celestron C14-AF XLT optical tube is a world-class instrument that delivers a level of detail to all your favorite deep sky objects. This obser...

The Celestron C11-A packs serious light gathering ability into a rugged aluminum optical tube. At only 24 inches long and weighing just 27.5 pounds...

The Celestron C9.25 is an unusual size with its 9.25" aperture and 2350 mm focal length, but many consider it to be the Goldilocks of optical tubes...

The Celestron C8-A is the direct (but much improved) descendent of Celestron's revolutionary C8 that transformed the hobby of astronomy when it was...

The Celestron C6-A OTA is a great multi-use optical tube with a 1500 mm focal length and a focal ratio of f/10. It offers 40% more light gathering ...

As the first long-focal-ratio flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astro...

OTA ONLY - Mount and Tripod Required Designed and built primarily for lunar and planetary views with the ability to resolve bright deep-sky objects...

EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of...

EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of...

The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast imaging system that will work for b...

The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast imaging system that will work for b...

If you're seeking crisp, contrasty views with high levels of detail, look no further than the Skymax series, Sky-Watcher's premiere line of Maksuto...

The exciting Starlux Maksutov-Newtonian from Sky-Watcher is just what astrophotographers and serious visual observers have been looking for.The Mak...

The EvoGuide 50DX Apo Guide Scope Astrograph takes Sky-Watcher's doublet design and packages it in a lightweight guide scope. These doublet refrac...

Sky-Watcher's Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar r...

Sky-Watcher's Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar r...

Designed with the discerning astrophotographer in mind, Sky-Watcher's top-of-the-line Esprit refractors deliver the kind of imaging performance one...

For 30 years, TeleVue has pushed the boundaries of APO refractors, as well as eyepieces, to the recognized pinnacle of performance. We were gratifi...

Sharpstar Optics introduces Askar FRA500 astrograph, which is the youngest among the well-known FRA- family, to our customers.Compared with its sib...

This Celestron 6" reflector OTA does not include a telescope mount or tripod but does come with tube rings, a 6 x 30 finder with bracket, a 2" cray...

Sky-Watcher's Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar r...

The EvoGuide 50DX Apo Guide Scope Astrograph takes Sky-Watcher's doublet design and packages it in a lightweight guide scope. These doublet refract...