Skip to content
Trusted advice since 1979 Excellent 4.5 rating on Google Reviews Free Shipping On Orders Over $100

OTA

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.

Filters

$
$
  • $439.00 - $439.00
    $439.00
    $439.00 - $439.00
    $439.00

    Astro-Tech AT80ED 3.1" f/7 ED Refractor OTA

    Astro-Tech
    In Stock

    This 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 details
    $439.00 - $439.00
    $439.00
    $439.00 - $439.00
    $439.00
  • $649.00 - $649.00
    $649.00
    $649.00 - $649.00
    $649.00

    Astro-Tech AT102ED 4" f/7 ED Refractor OTA

    Astro-Tech
    In Stock

    The Astro-Tech AT102ED is a fantastic value and incredible performer. This Astro-Tech AT102ED refractor has: • 102mm f/7 fully multicoated doublet ...

    View full details
    $649.00 - $649.00
    $649.00
    $649.00 - $649.00
    $649.00
  • $1,199.00 - $1,199.00
    $1,199.00
    $1,199.00 - $1,199.00
    $1,199.00

    Astro-Tech AT102EDL Refractor OTA FCD-100 and Lanthanum f/7 Doublet

    Astro-Tech
    More on the way

    The 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 details
    $1,199.00 - $1,199.00
    $1,199.00
    $1,199.00 - $1,199.00
    $1,199.00
  • $1,849.00 - $1,849.00
    $1,849.00
    $1,849.00 - $1,849.00
    $1,849.00

    Astro-Tech AT125EDL Refractor OTA FCD-100 and Lanthanum f/7.8 Doublet

    Astro-Tech
    In Stock

    The 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 details
    $1,849.00 - $1,849.00
    $1,849.00
    $1,849.00 - $1,849.00
    $1,849.00
  • $4,395.00 - $4,395.00
    $4,395.00
    $4,395.00 - $4,395.00
    $4,395.00

    Astro-Tech AT152EDT f/8 Triplet APO Refractor OTA

    Astro-Tech
    More on the way

    The Astro-Tech AT152EDT 152mm f/8 Triplet Apochromatic Refractor – A True Lifetime Telescope  For those who demand the best in optical performance ...

    View full details
    $4,395.00 - $4,395.00
    $4,395.00
    $4,395.00 - $4,395.00
    $4,395.00
  • 6" F/8 achromatic doublet refractor optical tube, CG5/AVX dovetail
    $999.00 - $999.00
    $999.00
    $999.00 - $999.00
    $999.00

    Celestron 6" f/8 Achromatic Doublet Refractor Optical Tube, CG5/AVX Dovetail

    Celestron
    More on the way

    Here's a sensational value - a big 6" (150mm) achromatic refractor optical tube that's priced like other manufacturers' 80mm scopes.  This Celestro...

    View full details
    $999.00 - $999.00
    $999.00
    $999.00 - $999.00
    $999.00
  • $1,499.00 - $1,499.00
    $1,499.00
    $1,499.00 - $1,499.00
    $1,499.00

    ZWO FF80 APO Refractor OTA

    ZWO
    More on the way

    The 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 details
    $1,499.00 - $1,499.00
    $1,499.00
    $1,499.00 - $1,499.00
    $1,499.00
  • $3,499.00 - $3,499.00
    $3,499.00
    $3,499.00 - $3,499.00
    $3,499.00

    ZWO FF130 APO Refractor OTA

    ZWO
    More on the way

    The 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 details
    $3,499.00 - $3,499.00
    $3,499.00
    $3,499.00 - $3,499.00
    $3,499.00

Compare products

0 of 3 items selected

Select first item to compare

Select second item to compare

Select third item to compare

Compare