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Grovers Toymaster 216 High Street, Northallerton DL78LW

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Optical Tube Assemblies

refracting or refractor telescope is a type of optical telescope

that uses a lens as its objective to form an image

(also referred to a dioptric telescope)

Learn More About Refractors

refracting or refractor telescope is a type of optical telescope

that uses a lens as its objective to form an image

(also referred to a dioptric telescope)

Learn More About Refractors

More

Optical Tube Assemblies There are 47 products.

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Showing 1 - 30 of 47 items
  • £ 730.00 Delivery In 1-5 Days* Tax included
    New

    The Starwave 80 EDT-R refractor has a triplet ED lens system with a premium Japanese Hoya FCD-100 ED glass element. Super-high transmission coating (STM Coating) is used on all air-to-glass surfaces for high contrast. The focuser is CNC machined with a precision rack and pinion gear

    £ 730.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 870.00 Delivery In 1-5 Days* Tax included

    2019 Edition with new imaging friendly 2.5" Rack & Pinion focuser like Wave Series 130 Triplet The Starwave 152mm V3 delivers rich field views of the night sky using a large 6 inch 152mm of unobstructed aperture at an incredible price. What's more, this lens isn't your average achromat lens.

    £ 870.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 579.00 Delivery In 1-5 Days* Tax included

    The new EVOSTAR DS-PRO Series ED low dispersion refractors in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our now legendary Equinox series,making them superb instruments for both imaging and visual observations.

    £ 579.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 899.00 Delivery In 1-5 Days* Tax included

    The new EVOSTAR DS-PRO Series ED Apochromatic refractors in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our now legendary Equinox series, making them superb instruments for both imaging and visual observations. 

    £ 899.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 599.00 Delivery In 1-5 Days* Tax included

    Sky-Watcher EvoStar-150, 150mm (6") f/1200 Achromatic Refractor Optical Tube Assembly. The Sky Watcher Evostar series are two-element air-spaced, multi-coated object achromatic refractors. They are truly outstanding, high-performance; high-resolution instruments manufactured to extremely high standards and mechanical precision.

    £ 599.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 1,349.00 Delivery In 1-5 Days* Tax included

    The new EVOSTAR DS-PRO Series ED Apochromatic refractors in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our now legendary Equinox series, making them superb instruments for both imaging and visual observations.

    £ 1,349.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 315.00 Delivery In 1-5 Days* Tax included

    Apochromatic Refractors, due to their unobstructed, text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system This high-end Evostar-72ED Apo features a doublet objective lens, with one Extra-Low Dispersion (ED) glass element. Top quality Schott...

    £ 315.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 899.00 Delivery In 1-5 Days* Tax included

    The Starwave 102 ED-R refractor has a doublet ED lens system with a premium FPL53 ED glass element. Super-high transmission coating (STM Coating) is used on all air-to-glass surfaces for high contrast. The new All CNC machined Geared dual speed focuser is significantly smoother than ever, and the all CNC tube design sports a more compact retractable...

    £ 899.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • From £ 875.00 Available To Order Tax included

    Choose Reducer/Corrector/Flattener On Right - Save On Postage NEW Starwave 110ED V2 2018 model with Positive Lock R&P focuser and CNC machined tube with light weight rings. Also see the optional CNC carry handle offer. Get this CLASSIC with improved mechanics throughout! Great for solar.

    From £ 875.00 Tax included
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  • £ 1,100.00 Delivery In 1-5 Days* Tax included

    2019 Model. The Altair Astro 80mm ED Triplet APO refractor has a 480mm focal length triplet lens cell with FPL53 ED glass and QC optical test report. Every telescope lens has a serial number represented on the optical test report - your guarantee of top optical quality.

    £ 1,100.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 1,450.00 Delivery In 1-5 Days* Tax included

    The Altair Astro 80mm ED Triplet APO refractor uses a 480mm focal length lens cell with Japanese FPL53 ED glass from Ohara. A rigid aluminium tube with two tube rings allows stable mounting for astro photography, and the rotating 2.5" Rack and Pinion dual speed focuser can handle heavy loads whilst keeping the telescope light. 

    £ 1,450.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 1,699.00 Delivery In 1-5 Days* Tax included

    2019 Production Run now in stock, with 100mm removable binoviewer extension. Newer more refined OTA design with ultra hard pearl matt powdercoat. CNC Rack 'n Pinion geared focuser with self centering 2" aperture and 2" to 1.25" adapter.

    £ 1,699.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • From £ 1,149.00 Available To Order Tax included

    The Sky-Watcher Esprit-80ED Professional Super APO Triplet Refractor OTA are instruments of the highest quality with optical performance rivalling or exceeding similar telescopes of even the most famous high-end telescope brands.

    From £ 1,149.00 Tax included
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  • From £ 1,749.00 Available To Order Tax included

    The Sky-Watcher Esprit-100ED Professional Super APO Triplet Refractor OTA are instruments of the highest quality with optical performance rivalling or exceeding similar telescopes of even the most famous high-end telescope brands. Save £5 - Buy the Field Flattener with the telescope!

    From £ 1,749.00 Tax included
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  • From £ 375.00 Available To Order Tax included

    Brand New for 2015 Choose Matching Reducer / Flattener Now & Save On Postage

    From £ 375.00 Tax included
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  • £ 849.00 Delivery In 1-5 Days* Tax included
    Sale!

    The new EVOSTAR DS-PRO Series ED Apochromatic refractors in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our now legendary Equinox series, making them superb instruments for both imaging and visual observations. With Focal Reducer Corrector

    £ 849.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 589.00 Delivery In 1-5 Days* Tax included
    Sale!

    Sky-Watcher STARTRAVEL telescopes are two-element, air-spaced achromatic refractors, that are well proven performers for ‘Rich-Field’ views of comets, star fields, star clusters, nebulae, bright galaxies & planets, the Moon and the Sun (with proper safety filtering!), as well as giving excellent daytime terrestrial views when used with an erecting...

    £ 589.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 285.00 Delivery In 1-5 Days* Tax included
    Sale!

    Ideal for Daytime Terrestrial Observations as well as Deep-Sky Astronomical Use.Sky-Watcher STARTRAVEL telescopes are two-element, air-spaced achromatic refractors, that are well proven performers for ‘Rich-Field’ views of comets, star fields, star clusters, nebulae, bright galaxies & planets, the Moon and the Sun, as well as giving excellent...

    £ 285.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 849.00 Available To Order Tax included

    A larger aperture version of the A80M, this OTA also offers an excellent first choice as a telescope but with higher light gathering power. Incl. Tube Rings, Dovetail Adapter, Flip Mirror, Dot Finder & Carry Handle  Shown with eyepieces sold separately

    £ 849.00 Tax included
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  • £ 2,699.00 Delivery In 1-5 Days* Tax included

    The AX103S is the latest in the Vixen refractor line and features a triplet ED objective lens and a rear field flattener lens. This f8.0 APO refractor benefits from a central ED lens in the objective lens array to reduce chromatic aberration and improve contrast. An optional focal reducer speeds up the scope to f5.6 making it a superior astro imaging...

    £ 2,699.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 5,199.00 Delivery In 1-5 Days* Tax included

    An ultra-fast refractor designed for discerning astrophotographers featuring a 5 element optical design. This f3.8 OTA is optimised for digital imaging.

    £ 5,199.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 249.00 Delivery In 1-5 Days* Tax included

    This lightweight 5” Newtonian is perfect for beginner astronomers because it features excellent light gathering with sharp images for its price and size. As well as being suitable for lunar and planetary observation, the scope is also perfect for targets such as star clusters, nebulae and galaxies.

    £ 249.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 1,199.00 Delivery In 1-5 Days* Tax included

    The remarkably fast 200mm f4 parabolic primary mirror of the Vixen R200SS Newtonian reflector gives extremely sharp images with no chromatic aberration. The use of state-of-the-art coating technology yields the ideal surface for the visual observer to enjoy wide views of deep sky objects.

    £ 1,199.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 399.00 Delivery In 1-5 Days* Tax included

    Vixen's new A62SS Refractor is a small, lightweight, grab and go telescope and comes complete with Dovetail Adapter and Crayford Focuser. The A62SS features a compact 62mm f8.4 (520mm focal length) and fully multi-coated 4-element objective lens.

    £ 399.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 499.00 Delivery In 1-5 Days* Tax included

    The new A81M Telescope is Vixen's latest achromatic refractor and features an 81 mm diameter objective lens, 910 mm focal length, and F/11.2 focal ratio. It comes complete with Tube Rings, Dovetail Adapter, Flip Mirror &  a Red Dot Finder.

    £ 499.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 730.00 Available To Order Tax included

    The Starwave 80 EDT-R refractor has a triplet ED lens system with a premium Japanese Hoya FCD-100 ED glass element. Super-high transmission coating (STM Coating) is used on all air-to-glass surfaces for high contrast.

    £ 730.00 Tax included
    Ask For Delivery Time
    Available To Order
  • £ 1,110.00 Available To Order Tax included

    The Series 6000 Apochromatic Refractors are some of the best crafted refractors on the market. Each refractor is individually constructed and tested to ensure that they meet our highest standards, both optically and mechanically. .

    £ 1,110.00 Tax included
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  • £ 2,075.00 Available To Order Tax included

    The Series 6000 Apochromatic Refractors are some of the best crafted refractors on the market. Each refractor is individually constructed and tested to ensure that they meet our highest standards, both optically and mechanically. 

    £ 2,075.00 Tax included
    Ask For Delivery Time
    Available To Order
  • £ 3,185.00 Available To Order Tax included

    The Series 6000 Apochromatic Refractors are some of the best crafted refractors on the market.  Each refractor is individually constructed and tested to ensure that they meet our highest standards, both optically and mechanically.

    £ 3,185.00 Tax included
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  • £ 999.00 Delivery In 1-5 Days* Tax included

    The Vixen ED refractor range has been redesigned in order to allow the use of full frame DSLR camera sensors and yet are still compact and portable. The range is now designated SD (standing for Super extra low Dispersion glass) and includes the same 81mm, 103mm and 115mm variants.

    £ 999.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
Showing 1 - 30 of 47 items