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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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  1. Officina Stellare RIFAst 400 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

    Officina Stellare - RIFAst 400 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

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    Model#: RIFA400SGA
    $24,435.00

  2. Officina Stellare - Pro RC 800 f/8 Ceramic Glass Full Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 800 f/8 Ceramic Glass Full Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC800CGC
    $171,460.80

  3. Officina Stellare Pro RC 800 f/8 Ceramic Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 800 f/8 Ceramic Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC800CGA
    $163,360.80

  4. Officina Stellare Pro RC 800 f/8 Standard Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 800 f/8 Standard Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC800SGA
    $133,484.00

  5. Officina Stellare Pro RC 600 f/8 Ceramic Glass Full Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 700 f/8 Ceramic Glass Full Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC700CGC
    $118,152.00

  6. Officina Stellare Pro RC 600 f/8 Ceramic Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 700 f/8 Ceramic Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC700CGA
    $112,752.00

  7. Officina Stellare Pro RC 700 f/8 Standard Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 700 f/8 Standard Glass Aluminum Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC700SGA
    $76,394.00

  8. Officina Stellare Pro RC 600 f/8 Ceramic Glass Full Carbon Ritchey Chrétien Optical Tube

    Officina Stellare - Pro RC 600 f/8 Ceramic Glass Full Carbon Ritchey Chrétien Optical Tube

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate glass.

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    Model#: PRC600CGC
    $76,828.50

  9. Sky-Watcher USA 10" Quattro Imaging Newtonian Reflector Optical Tube Assembly

    Sky-Watcher USA - 10" Quattro Imaging Newtonian Reflector Optical Tube Assembly

    The Sky-Watcher Quattro Imaging Newtonian telescope with dual speed focuser includes an outstanding mirror-set and a 2" dual-speed 10:1 ratio focuser for precision focusing for optimal performance

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    (48 States)
    Model#: S11220
    $770.00

  10. Sky-Watcher USA 8" Quattro Imaging Newtonian Reflector Optical Tube Assembly

    Sky-Watcher USA - 8" Quattro Imaging Newtonian Reflector Optical Tube Assembly

    The Sky-Watcher Quattro Imaging Newtonian telescope with dual speed focuser includes an outstanding mirror-set and a 2" dual-speed 10:1 ratio focuser for precision focusing for optimal performance

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    (48 States)
    Model#: S11210
    $610.00

  11. Takahashi - FSQ-130ED Astrograph

    Takahashi - FSQ-130ED Astrograph

    The new Takahashi incorporates optics that use an exceptionally advanced design that produces a flat-field astrograph a with large highly illuminated field that is further enhanced with the new dedicated 645 reducer that produces a Ø70mm image circle at f/3.5.

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    (48 States)
    Model#: FQK0130
    $12,795.00

  12. 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.

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    (48 States)
    Model#: S11420
    $3,199.00

  13. 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.

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    (48 States)
    Model#: S11410
    $2,499.00

  14. 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.

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    (48 States)
    Model#: S11400
    $1,649.00

  15. Explore Scientific ED80mm f/6 Classic White "Essential Series" Air-Spaced Triplet Refractor

    Explore Scientific - ED80mm f/6 Classic White "Essential Series" Air-Spaced Triplet Refractor

    Explore Scientific Instruction Booklet for Triplet Refractors

    This 80mm f/6 ED Apochromatic triplet is an air-spaced triplet refractor telescope for observing and photography of celestial objects. Instrument utilizing Hoya ED glass, comes equipped with a 99% dielectric-coated 2-inch diagonal. Case, Finder Scope and Mount NOT included.

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    (48 States)
    Model#: ED0806-01
    Save Until April 30th!

    Regular Price: $699.99

    Special Price: $599.99

  16. AG Optical 14" Imaging Harmer Wynne Astrograph

    AG Optical - 14" Imaging Harmer Wynne Astrograph

    Imaging Harmer Wynne (iHW) astrographs are high resolution, fast focal ratio instruments with excellent on and off axis performance.

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    (48 States)
    Model#: iHW14
    $23,975.00

  17. Explore Scientific 102mm f/7 ED Apochromatic Triplet Essential Refractor Telescope

    Explore Scientific - ED102mm f/7 Classic White "Essential Series" Air-Spaced Triplet Refractor *

    The Explore Scientific 102mm f/7 Air-Spaced Triplet ED APO Telescope made Wired Magazine''s Wish List for cool gifts and is a perfect instrument for demanding wide field observing and astrophotography.

    Explore Scientific Instruction Booklet for Triplet Refractors

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    (48 States)
    Model#: ED10207-01
    Save Until April 30th!

    Regular Price: $999.99

    Special Price: $849.99

  18. Opticstar Optimum One ED80S Gold OTA with PX-75C Planetary Camera - Color

    Opticstar - "Optimum One" Series - ED80S Gold + PX-75M Colour Planetary Camera

    The Opticstar ED80S short-tube refractor is ideal as a portable scope and can be used for observing, imaging or as a guide scope.

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    (48 States)
    Model#: ED80S + PX-75M

    Regular Price: $1,448.00

    Special Price: $1,375.60

  19. Opticstar Optimum One ED80S Gold OTA with PX-75C Planetary Camera - Color

    Opticstar - "Optimum One" Series - ED80S Gold + PX-75C Colour Planetary Camera

    The Opticstar ED80S short-tube refractor is ideal as a portable scope and can be used for observing, imaging or as a guide scope.

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    (48 States)
    Model#: ED80S + PX-75C

    Regular Price: $1,298.00

    Special Price: $1,233.10

  20. Lunt Engineering - 152mm f/7.9 ED APO Refractor

    Lunt Engineering - 152mm f/7.9 ED APO Refractor

    A 6" f/7.9 ED APO with the glass combination Chengdu CDGM FK61 and Lanthanum H-LAF53.

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    Model#: LE-152ED
    $2,990.00

Items 21 to 40 of 238 total

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