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The optical tube is really the heart of your night time exploration. Sizes range from 50mm to 20" in diameter as well as f/ratios from f/2.2 to f/15. The optical designs range from simple doublet refractors to complex cassegrains with built-in field flatteners. There is literally something for everyone here, you just have to decide what path you want to walk down. We are always here to help with any questions you have.
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Original price $519.00 - Original price $519.00Original price$519.00$519.00 - $519.00Current price $519.00Astro-Tech AT72EDII Refractor OTA FPL-53 and Lanthanum f/6 Doublet
Astro-TechIn StockThe Astro-Tech AT72EDII takes the performance, and mechanics, of the "product everyone should own" (thank you Astronomy Magazine) and gives it an u...
View full detailsOriginal price $519.00 - Original price $519.00Original price$519.00$519.00 - $519.00Current price $519.00 -
Original price $419.00 - Original price $419.00Original price$419.00$419.00 - $419.00Current price $419.00Astro-Tech AT60ED 60mm f/6 FPL-53ED and Lanthanum Doublet
Astro-TechIn StockThis Astro-Tech ED refractor has: 60mm f/6 fully multicoated FPL-53 and Lanthanum doublet refractor optics dual-speed Rack and Pinion 2” focuser w...
View full detailsOriginal price $419.00 - Original price $419.00Original price$419.00$419.00 - $419.00Current price $419.00 -
Original price $439.00 - Original price $439.00Original price$439.00$439.00 - $439.00Current price $439.00Astro-Tech AT80ED 3.1" f/7 ED Refractor OTA
Astro-TechIn StockThis Astro-Tech AT80ED refractor has: 80mm f/7 fully multicoated doublet optics using FK-61 ED glass dual-speed 2" Rack and Pinion rotatable focus...
View full detailsOriginal price $439.00 - Original price $439.00Original price$439.00$439.00 - $439.00Current price $439.00 -
Original price $649.00 - Original price $649.00Original price$649.00$649.00 - $649.00Current price $649.00Astro-Tech AT102ED 4" f/7 ED Refractor OTA
Astro-TechIn StockThe Astro-Tech AT102ED is a fantastic value and incredible performer. This Astro-Tech AT102ED refractor has: • 102mm f/7 fully multicoated doublet ...
View full detailsOriginal price $649.00 - Original price $649.00Original price$649.00$649.00 - $649.00Current price $649.00 -
Original price $0.00 - Original price $0.00Original price $0.00$1,399.00$1,399.00 - $1,399.00Current price $1,399.00Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA
Astro-TechIn StockThe Astro-Tech AT115EDT 4.53" f/7 ED triplet apochromatic refractor offers more performance and features than similarly-priced smaller aperture com...
View full detailsOriginal price $0.00 - Original price $0.00Original price $0.00$1,399.00$1,399.00 - $1,399.00Current price $1,399.00 -
Original price $0.00 - Original price $0.00Original price $0.00$899.00$899.00 - $899.00Current price $899.00Astro-Tech AT80EDT f/6 ED Triplet Refractor OTA
Astro-TechMore on the wayFor the backyard grab-and-go observer, for the Milky Way star field scanner, for the wide field imager, for the birder and terrestrial photographer...
View full detailsOriginal price $0.00 - Original price $0.00Original price $0.00$899.00$899.00 - $899.00Current price $899.00 -
Original price $1,899.00 - Original price $1,899.00Original price$1,899.00$1,899.00 - $1,899.00Current price $1,899.00Astro-Tech AT130 EDT f/7 ED Triplet OTA
Astro-TechIn StockSome observers feel that the Astro-Tech AT130EDT 5.12" f/7 ED triplet apochromatic refractor compares favorably in performance to scopes nearly fou...
View full detailsOriginal price $1,899.00 - Original price $1,899.00Original price$1,899.00$1,899.00 - $1,899.00Current price $1,899.00 -
Original price $329.00 - Original price $329.00Original price$329.00$329.00 - $329.00Current price $329.00Astro-Tech AT70ED 2.8" f/6 ED Refractor OTA
Astro-TechIn StockThis Astro-Tech AT70ED refractor has: 70mm f/6 fully multicoated doublet optics using FK-61 ED glass dual-speed 2" Rack and Pinion focuser 2" and ...
View full detailsOriginal price $329.00 - Original price $329.00Original price$329.00$329.00 - $329.00Current price $329.00 -
Original price $139.95 - Original price $139.95Original price$139.95$139.95 - $139.95Current price $139.95Astro-Tech 60mm Photoguide Refractor OTA
Astro-TechIn StockThe new Astro-Tech AT60GS 60mm guidescope with upgraded helical focuser makes highly accurate autoguiding of deep space astrophotos affordable for ...
View full detailsOriginal price $139.95 - Original price $139.95Original price$139.95$139.95 - $139.95Current price $139.95 -
Original price $1,199.00 - Original price $1,199.00Original price$1,199.00$1,199.00 - $1,199.00Current price $1,199.00Astro-Tech AT102EDL Refractor OTA FCD-100 and Lanthanum f/7 Doublet
Astro-TechMore on the wayThe Astro-Tech AT102EDL takes the performance of the it smaller siblings and combines it with the mechanics of the EDT line. This Astro-Tech ED ref...
View full detailsOriginal price $1,199.00 - Original price $1,199.00Original price$1,199.00$1,199.00 - $1,199.00Current price $1,199.00 -
Original price $849.00Original price $849.00 - Original price $849.00Original price $849.00Current price $600.00$600.00 - $600.00Current price $600.00
Astro-Tech AT60EDP 60mm f/5 Dual ED Petzval OTA
Astro-TechIn StockThis unique Astro-Tech apochromatic ED petzval fast focal ratio refractor has an incredible flat field for your astro-photography endeavors. This ...
View full detailsOriginal price $849.00Original price $849.00 - Original price $849.00Original price $849.00Current price $600.00$600.00 - $600.00Current price $600.00Save $249.00 -
Original price $1,849.00 - Original price $1,849.00Original price$1,849.00$1,849.00 - $1,849.00Current price $1,849.00Astro-Tech AT125EDL Refractor OTA FCD-100 and Lanthanum f/7.8 Doublet
Astro-TechIn StockThe Astro-Tech AT125EDL takes the performance of the it smaller siblings and combines it with the mechanics of the EDT line. This Astro-Tech ED ref...
View full detailsOriginal price $1,849.00 - Original price $1,849.00Original price$1,849.00$1,849.00 - $1,849.00Current price $1,849.00 -
Original price $1,595.00 - Original price $1,595.00Original price$1,595.00$1,595.00 - $1,595.00Current price $1,595.00Astro-Tech AT90CFT Limited Edition f/6 Triplet APO Refractor Carbon Fiber OTA
Astro-TechIn StockThis Astro-Tech AT90CFT refractor has: • 90mm f/6 apochromatic triplet optics using an FCD-100 ED element• 2.5" dual-speed rotating rack and pini...
View full detailsOriginal price $1,595.00 - Original price $1,595.00Original price$1,595.00$1,595.00 - $1,595.00Current price $1,595.00 -
Original price $979.99 - Original price $979.99Original price$979.99$979.99 - $979.99Current price $979.99Explore Scientific AR152 6" f/6.5 Achromatic Doublet Refractor Optical Tube
Explore ScientificMore on the wayThis 6" Explore Scientific AR152 achromatic refractor optical tube is a sensational value - a big 6" (152mm) and fast f/6.5 refractor that's priced...
View full detailsOriginal price $979.99 - Original price $979.99Original price$979.99$979.99 - $979.99Current price $979.99 -
Original price $1,599.00 - Original price $1,599.00Original price$1,599.00$1,599.00 - $1,599.00Current price $1,599.00Celestron 8" EdgeHD Optical Tube, CGE/Losmandy Dovetail
CelestronIn StockThe EdgeHD high definition flat field optics of this Celestron 8" EdgeHD optical tube make true astrographic-quality 8" optics truly affordable. Th...
View full detailsOriginal price $1,599.00 - Original price $1,599.00Original price$1,599.00$1,599.00 - $1,599.00Current price $1,599.00 -
Original price $4,395.00 - Original price $4,395.00Original price$4,395.00$4,395.00 - $4,395.00Current price $4,395.00Astro-Tech AT152EDT f/8 Triplet APO Refractor OTA
Astro-TechMore on the wayThe Astro-Tech AT152EDT 152mm f/8 Triplet Apochromatic Refractor – A True Lifetime Telescope For those who demand the best in optical performance ...
View full detailsOriginal price $4,395.00 - Original price $4,395.00Original price$4,395.00$4,395.00 - $4,395.00Current price $4,395.00 -
Original price $2,999.99 - Original price $2,999.99Original price$2,999.99$2,999.99 - $2,999.99Current price $2,999.99Explore Scientific 127mm f/7.5 Carbon Fiber FCD100 ED Triplet Refractor
Explore ScientificIn StockThis big 127mm (5") Explore Scientific Carbon Fiber air-spaced ED triplet apochromatic refractor is loaded with quality optical performance at a su...
View full detailsOriginal price $2,999.99 - Original price $2,999.99Original price$2,999.99$2,999.99 - $2,999.99Current price $2,999.99 -
Original price $2,999.00 - Original price $2,999.00Original price$2,999.00$2,999.00 - $2,999.00Current price $2,999.00Celestron 9.25" EdgeHD Optical Tube, CGE/Losmandy Dovetail
CelestronMore on the wayThe EdgeHD high definition flat field optics of this Celestron 9.25" EdgeHD optical tube give you true astrographic-quality 9.25" optics with a def...
View full detailsOriginal price $2,999.00 - Original price $2,999.00Original price$2,999.00$2,999.00 - $2,999.00Current price $2,999.00 -
Original price $320.00 - Original price $320.00Original price$320.00$320.00 - $320.00Current price $320.00Sky-Watcher Skymax 102 102mm f/12.75 Maksutov-Cassegrain Optical Tube S11510
Sky-WatcherMore on the wayThe Sky-Watcher 102mm Maksutov-Cassegrain is an inexpensive step up from a 90mm Mak. This compact optical powerhouse is capable of producing sharp,...
View full detailsOriginal price $320.00 - Original price $320.00Original price$320.00$320.00 - $320.00Current price $320.00 -
Original price $3,210.00 - Original price $3,210.00Original price$3,210.00$3,210.00 - $3,210.00Current price $3,210.00Sky-Watcher Esprit 100mm f/5.5 ED Apochromatic Triplet Refractor With Field Flattener S11410
Sky-WatcherMore on the wayThe Sky-Watcher Esprit 100mm ED apochromatic triplet refractor has the premium high contrast/high resolution/flat field optical performance you nee...
View full detailsOriginal price $3,210.00 - Original price $3,210.00Original price$3,210.00$3,210.00 - $3,210.00Current price $3,210.00 -
Original price $540.00 - Original price $540.00Original price$540.00$540.00 - $540.00Current price $540.00Sky-Watcher Evostar 72mm f/5.8 ED Doublet Apochromatic Refractor
Sky-WatcherIn StockThe Evostar 72ED is a portable powerhouse. It is true that great things can come in a small package.. This Sky-Watcher Evostar 72ED apochromatic re...
View full detailsOriginal price $540.00 - Original price $540.00Original price$540.00$540.00 - $540.00Current price $540.00 -
Original price $4,399.00 - Original price $4,399.00Original price$4,399.00$4,399.00 - $4,399.00Current price $4,399.00Celestron 11" EdgeHD Optical Tube, CGE/Losmandy Dovetail
CelestronMore on the wayThe EdgeHD high definition flat field optics of this Celestron 11" EdgeHD optical tube give you a true astrographic-quality big aperture 11" optica...
View full detailsOriginal price $4,399.00 - Original price $4,399.00Original price$4,399.00$4,399.00 - $4,399.00Current price $4,399.00 -
Original price $1,500.00 - Original price $1,500.00Original price$1,500.00$1,500.00 - $1,500.00Current price $1,500.00Sky-Watcher Skymax 180 180mm f/15 Maksutov-Cassegrain Optical Tube S11540
Sky-WatcherMore on the wayThe Sky-Watcher 180mm Maksutov-Cassegrain folded optical system comes close in optical performance to the best-known ultra-premium 7" Maksutov, but...
View full detailsOriginal price $1,500.00 - Original price $1,500.00Original price$1,500.00$1,500.00 - $1,500.00Current price $1,500.00 -
Original price $550.00 - Original price $550.00Original price$550.00$550.00 - $550.00Current price $550.00Sky-Watcher Skymax 127 f/11.8 Maksutov-Cassegrain Optical Tube
Sky-WatcherIn StockThe Sky-Watcher 127mm Maksutov-Cassegrain folded optical system is a compact optical powerhouse capable of producing sharp, high contrast images in...
View full detailsOriginal price $550.00 - Original price $550.00Original price$550.00$550.00 - $550.00Current price $550.00
