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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. Meade - 12" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Meade - 12" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    The Meade Instruments 12" f/8 ACF Optical Tube Assembly (OTA) features a 12” aperture, f/8 optical system with Meade’s Advanced Coma Free (ACF) optics and high-contrast baffling that ensures crisp, pinpoint imaging to the very edge of the field.

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    Model#: 1208-80-00
    $3,499.00

  2. Meade 115mm Series 6000 ED Triplet APO (f/7) OTA

    Meade - 115mm Series 6000 ED Triplet APO (f/7) OTA

    Meade 115mm ED Triplet APO Refractor #4507-00-05. For crisp wide field observing and imaging, nothing can beat a true triple-element Apochromatic Refractor (APO)

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    Model#: 4507-00-05
    $1,999.00

  3. Meade - 10" LX200-ACF (f/10) Advanced Coma-Free OTA

    Meade - 10" LX200-ACF (f/10) Advanced Coma-Free OTA

    Picture yourself sitting in your friend Bill's backyard, with your other colleagues and friends Janice, Frank,  Sue and Zeak. All of you have come together to commemorate Earth Hour

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    Model#: 1010-60-00
    $1,799.00

  4. Meade - 10" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Meade - 10" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Building on Meade’s award-winning Advanced Coma-Free (ACF) optics, the 12" OTA employs a fast f/8 optical system with high-contrast baffling that insures crisp, pinpoint imaging to the very edge of the field

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    Model#: 1008-80-00
    $2,499.00

  5. Lunt Engineering - Doublet ED Apo 152 f/7.9 Optical Tube with Accessories

    Lunt Engineering - Doublet ED Apo 152 f/7.9 Optical Tube with Accessories

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

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    Model#: APM-152-1200-FK61/LA-D-2.5ZTA
    $3,990.00

  6. Lunt Engineering 80mm ED Doublet OTA

    Lunt Engineering - 80mm ED Doublet OTA

    The Lunt 80mm ED Doublet OTA comes with fully multi-coated lenses that can be used for both night time and solar observing (with a solar filter!), depending on your choice.

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    Model#: LE80OTA
    $449.00

  7. Lunt Engineering - 70mm ED Doublet OTA

    Lunt Engineering - 70mm ED Doublet OTA

    • F/6
    • Focal Length: 420mm
    • Fully multi-coated lenses
    • 10:1 Crayford Style Focuser
    • 2” to 1.25” reducer
    • Diagonal not included
    • Soft side carrying case with fitted foam
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    Model#: LE70OTA
    $399.00

  8. DIAGONAL NOT INCLUDED

    Lunt Engineering - 102mm ED Doublet OTA

    A new optical tube by Lunt, the 102mm ED Doublet! With a slow focal ratio of f/7, this optical tube is an excellent choice for observation of the moon, sun, and planets. When using solar filter, this telescope is great for sun observing!

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    Model#: LE102OTA
    $729.00

  9. APM 100mm 45° ED-APO Binoculars with Interchangeable Eyepieces

    Lunt Engineering - 100mm 45° ED-APO Binoculars with Interchangeable Eyepieces

    This binocular is made for very high power use up to above 100 power.

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    Model#: APM100ED-BINO
    $2,950.00

  10. 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

    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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    Model#: ES-ED0806-01

    Regular Price: $1,622.99

    Special Price: $729.99

  11. Explore Scientific - ED80 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    DISCONTINUED: Explore Scientific - ED80 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    This is a discontinued item. We recommend the newer version of the Explore Scientific ED80 White Essential Series Apochromatic Refractor as a replacement.

    The Explore Scientific 80mm f/6 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.

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    (48 States)
    Model#: ES-ED0806-00
  12. Explore Scientific - ED80 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific - ED80 Air Spaced Carbon Fiber Triplet Refractor Telescope

    This 80mm f/6 ED Apochromatic triplet is an air-spaced triplet refractor telescope for observing and photography of celestial objects.

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    Model#: EDT-0806-CF
    .

    Regular Price: $2,556.99

    Special Price: $1,149.99

  13. Explore Scientific - ED127 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    DISCONTINUED: Explore Scientific - ED127 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    The Explore ED127 Essential Edition telescope comes with a white aluminum tube with black accents.

    No Longer Available please see the ES-ED127075-03

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    Model#: ES-ED127075-02
  14. Explore Scientific - ED127 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific - ED127 Air Spaced Carbon Fiber Triplet Refractor Telescope

    The Explore Scientific 127mm f/7.5 Air-Spaced Triplet ED APO produces a visual experience that is often compared to much larger aperture reflector telescopes.

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    Model#: EDT-127075-CF
    .

    Regular Price: $5,556.99

    Special Price: $2,499.99

  15. Explore Scientific ED102 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    DISCONTINUED: Explore Scientific - ED102 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    This is a discontinued item. We recommend the newer version of the 102mm f/7 ED Apochromatic Refractor from Explore Scientific as a replacement.

    The Explore Scientific 80mm f/6 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.

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    (48 States)
    Model#: ES-ED10207-00
  16. Explore Scientific - ED102 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific - ED102 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific uses ED (Extra-low Dispersion) FCD1 (Dense Fluor Crown) glass developed and manufactured by Hoya Optical of Japan.

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    (48 States)
    Model#: EDT-10207-CF

    Regular Price: $3,844.99

    Special Price: $1,729.99

  17. Explore Scientific - David H. Levy Comet Hunter f/4.8 Carbon Fiber Maksutov Newtonian Optical Tube Assembly

    Explore Scientific - David H. Levy Comet Hunter f/4.8 Carbon Fiber Maksutov Newtonian Optical Tube Assembly

    The Explore Scientific David H. Levy Comet Hunter is the result of a dream collaboration between long-time amateur astronomer & Explore Scientific founder, Scott Roberts, and one of his life-long heroes, David H. Levy. NOTE: Case, Finder Scope and Eyepiece NOT Included with this package

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    Model#: MN06048CF-03
    $999.99

  18. Explore Scientific - AR127 f/6.5 Air-Spaced Doublet Achromat Refractor

    Explore Scientific - AR127 f/6.5 Air-Spaced Doublet Achromat Refractor

    AR127 f/6.5 Air-Spaced Doublet with EMD Coatings; Deluxe Two-Speed 2-inch Crayford Focuser; Cradle Rings with Handle and Vixen-Style Dovetail Mount; 8x50 Straight Finderscope; Enhanced 99% Reflective 2-inch Diagonal with 1.25-inch Adapter

    For a Great Deal Also Consider : DAR127065-00

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    Model#: DAR127065-01

    Regular Price: $1,556.99

    Special Price: $699.99

  19. Explore Scientific - AR102 f/6.5 Air-Spaced Doublet Achromatic Refractor Telescope

    Explore Scientific - AR102 f/6.5 Air-Spaced Doublet Achromatic Refractor Telescope

    The latest addition to the Air-Spaced Doublet AR Series is the very portable, grab-and-go 102mm! Like its two larger brothers, the AR127,

    and the AR152, these are classic air-spaced, crown-and-flint, doublet achromatic refractors with superior-class optical figure, in a short (f/6.5) focal length design.

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    (48 States)
    Model#: DAR102065-00
    $499.00

  20. Explore Scientific - 80mm f/6 Air-Spaced Triplet ED Apochromatic Refractor w/ Deluxe Case & Accessories & TwiLight II Heavy-Duty Dual-Head Mount

    Explore Scientific - 80mm f/6 Air-Spaced Triplet ED Apochromatic Refractor w/ Deluxe Case & Accessories & TwiLight II Heavy-Duty Dual-Head Mount

    The 80mm f/6 ED Apochromatic triplet from Explore Scientific is a great air-spaced triplet refractor telescope for observing as well as for use in photography of celestial objects

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    (48 States)
    Model#: TED0806-00-MAZ02-01

    Regular Price: $2,689.98

    Special Price: $1,179.88

Items 101 to 120 of 177 total

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