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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
  • From £ 2,655.00 Out of stock Tax included

    Choose Reducer / Corrector / Flattener - On Right The Altair Astro 130mm F7 ED Triplet APO refractor uses a 905mm focal length lens cell with Japanese FPL51 ED glass from Ohara which is scpecifically chosen to be free of internal stresses and striae which affect optical quality in large size refractors.

    From £ 2,655.00 Tax included
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  • £ 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
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  • £ 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*
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  • £ 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
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  • £ 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
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  • £ 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*
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  • £ 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*
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  • £ 870.00 Delivery In 1-5 Days* Tax included

    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*
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  • £ 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
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  • £ 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
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  • £ 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
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  • £ 1,649.00 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.

    £ 1,649.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 2,399.00 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.

    £ 2,399.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 405.00 Delivery In 1-5 Days* Tax included

    The Altair 60 EDF is our most compact telescope so far, and a more refined version of the Lightwave 66 ED-R. It has improved optics in the form of an S-FPL53 based doublet objective lens providing superior colour correction, and a lighter more compact tube, CNC Rack n Pinion focuser with a rear camera rotator and triple thumbscrews to hold your camera or...

    £ 405.00 Tax included
    1-5 Days UK Delivery*
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  • £ 599.00 Available To Order Tax included

    Choose Reducer / Corrector / Flattener Now & Save On Postage - See below The Starwave 80ED-R is a more compact and refined version of the original Starwave 80ED. It has improved optics in the form of an S-FPL53 based doublet objective lens providing superior colour correction, and a lighter more compact tube with a "Rack and Pinion" geared focuser.

    £ 599.00 Tax included
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  • £ 599.00 Available To Order Tax included

    The Starwave 70 EDT-R refractor has a triplet ED lens system with premium Japanese Ohara SFPL-53 ED glass element. Super-high transmission coating (STM Coating) is used on all air-to-glass surfaces for high contrast.    The tube is made from lightweight aluminium alloy with CNC machined components. A tough matte pearl powder coated tube and hard-anodised...

    £ 599.00 Tax included
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  • £ 1,150.00 Available To Order Tax included

    NEW Improved v2 Model, with new CNC focuser: - Camera Tilt Adjuster - Camera Angle Adjuster Rotator (CAA) - Rear M48 Adapter direct thread with threaded cap   The Starwave 70 EDQ-R refractor has a four-lens system to give a flat field image circle of approximately 42mm at 350mm focal length, with a focal ratio of F5

    £ 1,150.00 Tax included
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  • £ 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*
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  • £ 1,719.00 Delivery In 1-5 Days* Tax included

    Sky-Watcher EvoStar-150ED, 150mm (6") f/1200 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.

    £ 1,719.00 Tax included
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  • From £ 599.00 Delivery In 1-5 Days* Tax included

    Supplied with or without 50mm finderscope. There is also a choice of fixing. See options on right. The Ascent 102mm F11 ED Doublet refractor is optimised for visual observation and imaging of solar system objects. An evolution of the well respected "Red Tube Classic" Starwave 102 Achromat, now with ED optics and better mechanics! 

    From £ 599.00 Tax included
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  • From £ 399.00 Delivery In 1-5 Days* Tax included

    Suppplied With or Without 50mm Finder & Quick Release Bracket - See Options On Right Includes tube rings. Does not include dovetail or diagonal. Choose Reducer / Corrector / Flattener Now & Save On Postage - See below

    From £ 399.00 Tax included
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  • From £ 549.00 Delivery In 1-5 Days* Tax included

    Supplied with or without 50mm finderscope. There is also a choice of fixing. See options on right. The ASCENT 102mm F7 ED Doublet refractor has all the features you need for enjoyable visual observing and astro-imaging. 

    From £ 549.00 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*
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  • £ 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
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  • £ 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*
  • £ 110.00 Delivery In 1-5 Days* Tax included

    £ 110.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
Showing 1 - 30 of 47 items