Happily Serving You in the Same Location for Over 58 Years!

Welcome!

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.

8 Item(s)

per page

Set Descending Direction
  1. Sky-Watcher USA - Quantum 100 ED APO Triplet

    Sky-Watcher USA - Quantum 100 ED APO Triplet

    Sky-Watcher Quantum top of the line ED-APO refractors offer premium optical performance for discriminating amateur astronomers and imagers

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11160
    $2,999.00

  2. Sky-Watcher USA ProED 100mm Doublet APO Refractor

    Sky-Watcher USA - ProED 100mm Doublet APO Refractor

    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 SHIPPING
    (48 States)
    Model#: S11120
    Sizzling Summer Savings ends July 31, 2014!

    Regular Price: $749.00

    Special Price: $649.00

  3. Sky-Watcher USA Esprit 120mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 120mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11420
    $3,199.00

  4. Sky-Watcher USA Esprit 80mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 80mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11400
    $1,649.00

  5. Sky-Watcher USA ProED 120mm Doublet APO Refractor

    Sky-Watcher USA - ProED 120mm Doublet APO Refractor

    Sky-Watcher high-performance ED-APO refractors offer premium optical performance for the discriminating amateur astronomer.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11130
    Sizzling Summer Savings ends July 31, 2014!

    Regular Price: $1,549.00

    Special Price: $1,399.00

  6. Sky-Watcher USA Esprit 150mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 150mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11430
    $6,399.00

  7. Sky-Watcher USA - ProED 80mm Doublet APO Refractor

    Sky-Watcher USA - ProED 80mm Doublet APO Refractor

    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 optical design.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11100
    Sizzling Summer Savings ends July 31, 2014!

    Regular Price: $649.00

    Special Price: $579.00

  8. Sky-Watcher USA Esprit 100mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 100mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11410
    $2,499.00

8 Item(s)

per page

Set Descending Direction