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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$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 $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 $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-TechIn StockThe 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 $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 $999.00 - Original price $999.00Original price$999.00$999.00 - $999.00Current price $999.00Celestron 6" f/8 Achromatic Doublet Refractor Optical Tube, CG5/AVX Dovetail
CelestronMore on the wayHere's a sensational value - a big 6" (150mm) achromatic refractor optical tube that's priced like other manufacturers' 80mm scopes. This Celestro...
View full detailsOriginal price $999.00 - Original price $999.00Original price$999.00$999.00 - $999.00Current price $999.00 -
Original price $839.95 - Original price $839.95Original price$839.95$839.95 - $839.95Current price $839.95Celestron 6" SCT Optical Tube, CG5/AVX Dovetail
CelestronMore on the wayThis 6" SCT optical tube has advanced Starbright XLT multicoatings for Celestron's brightest images ever. The Celestron C8 was the first Schmidt-Ca...
View full detailsOriginal price $839.95 - Original price $839.95Original price$839.95$839.95 - $839.95Current price $839.95 -
Original price $1,499.00 - Original price $1,499.00Original price$1,499.00$1,499.00 - $1,499.00Current price $1,499.00ZWO FF80 APO Refractor OTA
ZWOMore on the wayThe ZWO FF80 APO is a highly refined 80mm f/7.5 quadruplet apochromatic refractor, built from the ground up to deliver uncompromising optical perfo...
View full detailsOriginal price $1,499.00 - Original price $1,499.00Original price$1,499.00$1,499.00 - $1,499.00Current price $1,499.00 -
Original price $3,499.00 - Original price $3,499.00Original price$3,499.00$3,499.00 - $3,499.00Current price $3,499.00ZWO FF130 APO Refractor OTA
ZWOMore on the wayThe ZWO FF130 APO is a high-performance 130mm f/7.7 quadruplet refractor designed to meet the needs of astrophotographers and visual observers who ...
View full detailsOriginal price $3,499.00 - Original price $3,499.00Original price$3,499.00$3,499.00 - $3,499.00Current price $3,499.00
