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Optical Tube Assemblies
SkyWatcher Black Diamond 200/1000 OTA
1000mm f/5 Newtonian Reflector Diffraction limited 200mm parabolic primary mirror Ideal fast telescope for astrophotography Shortened tube length – lightweight and portable for its power Feature...
Celestron C6 Optical Tube Assembly (CG-5 DOVETAIL)
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%...
Celestron C9.25 SCT OTA Tube - CG5
9.25" Schmidt-Cassegrain Optical Tube Assembly (OTA) Features Celestron's premium patented StarBright XLT optical coatings 2350mm focal length (f/10) Fastar compatible Tube constructed of durable and lightweight...
Experience our best optical performance with EdgeHD’s aplanatic, flat field Schmidt-Cassegrain optics for pinpoint stars all the way to the edge of today’s largest imaging...
SkyWatcher 150/1200 Evostar Refractor OTA
As the largest quality refactor in its price range, the eagerly awaited Sky-Watcher 150/1200 Evostar OTA means a big jump in light gathering power with the same resolution...
SkyWatcher 300mm F/4 Quattro Reflector OTA Telescope
305mm aperture, 1200mm focal length Fast f/4 focal ratio Parabolic mirror designed for imaging with 94% reflectivity 10:1, dual-speed, 2-inch Crayford-style focuser Oversized secondary mirror...
SkyWatcher 150mm ESPRIT ED Triplet APO Refractor Telescope
Designed with the discerning astrophotographer in mind, Sky-Watcher’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of...
SkyWatcher 150/1200 Evostar Deluxe 150ED Doublet Refractor OTA
As the largest quality refactor in its price range, the eagerly awaited Sky-Watcher 150/1200 Evostar OTA means a big jump in light gathering power with the same resolution...
SkyWatcher Catadioptric Astrograph OTA 125/250 HAC125
Optical System: Honders Advanced Catadioptric Astrograph Focal length: 250mm Diameter: 125mm Focal ratio: f/2 FOV: Pinpoint image diameter >16mm or >3.6° Optical system Honders...
Celestron 14" Rowe-Ackermann Schmidt Astrography (RASA 36) V2 Optical Tube Assembly (CGE Dovetail)
The Rowe-Ackermann Schmidt Astrograph (RASA) V2 is a cost-effective optical system for space surveillance, Space Situational Awareness (SSA), other scientific applications, and advanced wide-field astroimaging. It...
Celestron 8" Rowe-Ackermann Schmidt Astrograph (RASA 8) Optical Tube Assembly (CGE Dovetail)
Capture spectacular wide-field deep sky images in seconds with Celestron’s portable astrograph, the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f/2.0 system is the...
The Celestron C9.25 is an unusual size with its 9.25” aperture and 2350mm focal length, but many consider it to be the Goldilocks of optical...
Celestron C11-A XLT 11" f/10 Schmidt-Cassegrain Telescope (OTA Only, CG-5 Dovetail)
Outfitted with an over-sized aperture, long effective focal length, and their proprietary StarBright XLT optical coatings, the Celestron C11-A XLT 11" f/10 Schmidt-Cassegrain Telescope provides power and...
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, this...