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- Astro-Tech ED Doublet Refractor Telescopes (1)
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Optical Tube Assemblies
Optical tube assemblies, commonly abbreviated by astronomers as OTAs are simply the tube of the telescope where the optics are internally located. OTAs can be helpful in a situation in which an observer has a compatible mount and doesn't want to buy a whole new telescope with a mount included. Optical Tube Assemblies can come in the form of Maksutov-Cassegrain, Astrographs, Reflectors, Refractors, Schmidt-Cassegrains and many others! With the right mounting connections and range of mount and tripod payload, OTAs are a great choice for changing optical type without changing the mount.
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Optical Guidance Systems - Ritchey-Chretien 10 " f/9 Truss or closed tube - Optical Tube Assembly
... Learn More
FREE SHIPPINGModel#: RC10(48 States)
$14,900.00 -
Optical Guidance Systems - Ritchey-Chretien 12.5 " f/9 - Optical Tube Assembly
... Learn More
FREE SHIPPINGModel#: RC12.5(48 States)
$19,900.00 -
Optical Guidance Systems - Ritchey-Chretien 14.5 " f/7.9 - Optical Tube Assembly
... Learn More
FREE SHIPPINGModel#: RC14.5(48 States)
$24,900.00 -
Optical Guidance Systems - Ritchey-Chretien 16 " f/8.4 - Optical Tube Assembly
... Learn More
FREE SHIPPINGModel#: RC16(48 States)
$37,900.00 -
Optical Guidance Systems - Ritchey-Chretien 20 " f/8.1 - Optical Tube Assembly
... Learn More
FREE SHIPPINGModel#: RC20(48 States)
$58,900.00 -
Optical Guidance Systems - Ritchey-Chretien 24 " f/8 - Optical Tube Assembly
... Learn More
FREE SHIPPINGModel#: RC24(48 States)
$83,900.00 -
Orion - 10 " f/8 Ritchey Cretien Optical Tube Assembly
Go after even the most elusive and faint deep-sky targets with the Orion 10" f/8.0 Ritchey-Chretien Astrograph. Featuring virtually coma-free optics for superb imaging performance, the Orion 10" f/8.0 Ritchey-Chretien Astrograph boasts a plethora of deluxe features
... Learn MoreModel#: 8961
$2,694.95 -
Orion - 100mm ED Refractor Optical Tube Assembly
Recently, Astronomy magazine ran a "buyer's guide" to portable 4" apochromatic refractors. All were impressive scopes, no doubt. But considering their price tags, which ranged from $2,695 (yes, that was the cheapest) to $3,595, you'd be excused if you didn't run right out and throw down your credit card for one. Here's something more practical: our 100mm ED apochromatic refractor.
... Learn MoreModel#: 09975
$679.95 -
Orion - 180mm Maksutov-Cassegrain Telescope Optical Tube
Looking for something to satisfy your appetite for power? Try a big Mak! For the most demanding enthusiast, our Orion 180mm Maksutov-Cassegrain Telescope sets a new standard for superb high-power performance in a remarkably compact design. With 7" of aperture and that long focal length Maksutov aficionados love, you'll get tack-sharp, high-contrast views and clearly defined photos with subtle detail.
... Learn MoreModel#: 09969
$1,219.95 -
Orion - 8 " f/8 Ritchey Cretien Optical Tube Assembly
* Ritchey-Chretien optical design produces superb flat-field, coma-free images that are superior to those achievable with conventional reflector or Schmidt-Cassegrain telescopes * One of the most compact Ritchey-Chretien astrographs available, at ... Learn More
Model#: 8958
$1,195.95 -
Orion - 8" f/8 Ritchey-Chretien Astrograph Telescope
As any prolific astrophotographer will tell you, the more light you can gather, the better your astrophotos will turn out. Combine light-gathering prowess with a compact design and an affordable price, and you're likely to end up with our new 8" f/8 Ritchey-Chretien Astrograph. As a leading supplier of affordable imaging equipment and solutions for amateur astronomers, Orion is proud to introduce this highly regarded telescope design used by advanced astrophotographers and professional observatories worldwide — and even by the Hubble Space Telescope!
... Learn MoreModel#: 08958
$1,195.00 -
Orion - Starblast 4.5 Imaging Optical Tube Assembly
Simply the most affordable astrophotography-optimized telescope available! Big 4.5" primary mirror and fast f/4 focal ratio produce stunning images with short exposure times.
... Learn MoreModel#: 09974
$149.95 -
PlaneWave - 12.5" CDK Corrected Dall-Kirkham Carbon Fiber Telescope
The new CDK optical design is the innovative solution for unsurpassed astroimaging quality at an affordable price.
... Learn MoreModel#: CDK125
Regular Price: $9,990.00
Special Price: $9,890.00
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PlaneWave - 17" CDK Corrected Dall-Kirkham Carbon Fiber Truss Telescope
The latest member of the CDK family is the CDK17 New and Improved in 2013. The CDK optical design is the innovative solution for unsurpassed astro-imaging quality at an affordable price. The purpose of the design is to provide a telescope that will excel at imaging with large format CCD cameras while remaining superb for visual use.
... Learn MoreModel#: CDK17
$22,000.00 -
PlaneWave - 20" CDK Corrected Dall-Kirkham Carbon Fiber Truss Telescope
The new CDK optical design is the innovative solution for unsurpassed astroimaging quality at an affordable price ... Learn More
Model#: CDK20
Regular Price: $32,500.00
Special Price: $32,400.00
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Sky-Watcher - 100mm Apochromatic Refractor Optical Tube Assembly
SW PRO 100ED APO Refractor: When You Demand the Best!Sky-Watcher is a leader in the design and manufacturer of ED-APO systems. Sky-Watcher offers one of the most extensive lines of ED-APOCHROMATIC refractors in the world ... Learn More
FREE SHIPPINGModel#: S11120(48 States)
Regular Price: $895.00
Special Price: $749.00
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Sky-Watcher - 120mm Apochromatic Refractor Optical Tube Assembly
SKY-WATCHER PRO 120ED APO REFRACTOR: Serious Amateurs will Love the SW 120mm ED-APO RefractorSky-Watcher high-performance ED-APO refractors offer premium optical performance for the discriminating amateur astronomer ... Learn More
FREE SHIPPINGModel#: S11130(48 States)
Regular Price: $1,695.00
Special Price: $1,599.00
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Sky-Watcher - 80mm Apochromatic Refractor Optical Tube Assembly
Sky-Watcher PRO 80ED APO Refractor: Portable Optical Powerhouse! Due to their unobstructed textbook-like diffraction patterns and exotic optical properties, the ED-APO produces the sharpest, highest quality imaging obtainable from any telescope optic ... Learn More
FREE SHIPPINGModel#: S11100(48 States)
Regular Price: $695.00
Special Price: $649.00
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Takahashi - Collimating Telescope for Refractors, Cassegrains, & Ritchey-Chretiens
Designed for use on refractor, Ritchey-Chrieten and classical Cassegrain telescopes. The Takahashi Collimating Telescope is also used on the Takahashi CN-212, Mewlons and refractors of 820mm or more in focal length
... Learn MoreFREE SHIPPINGModel#: TCE0100(48 States)
$320.95 -
Takahashi - Epsilon 180ED Carbon Fiber f/2.8 Hyperbolic Flat-Field Astrograph OTA - Limited Production
This first addition to the new Epsilon Series introduces the newly designed ED corrector and fast speed of f/2.8. This fast field photo/visual astrograph is perfect for digital 35mm cameras and CCD cameras.
... Learn MoreFREE SHIPPINGModel#: TEK0182(48 States)
$6,400.00
