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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
  • £ 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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  • 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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  • £ 549.00 Available To Order Tax included

     

    £ 549.00 Tax included
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  • 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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  • £ 1,150.00 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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  • £ 405.00 Delivery In 1-5 Days* Tax included

    Featuring ED optics, the travel-friendly Starwave 70mm F6 ED Doublet refractor can be taken anywhere. The optical tube folds down to just under 30cm length with the dew shield retracted, and weighs about 2kg. The Starwave 70ED is capable of both visual observation and wide-field imaging in a single telescope.

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

    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 £ 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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  • £ 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
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  • £ 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
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  • From £ 2,655.00 Delivery In 1-5 Days* 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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  • £ 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
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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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  • £ 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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  • From £ 1,500.00 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 £ 1,500.00 Tax included
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  • From £ 2,025.00 Delivery In 1-5 Days* Tax included

    F/7 SUPER APO TRIPLET REFRACTOR 2” Dielectric Star Diagonal, 28mm 2” LET Eyepiece, 9x50 Right-Angled Erect Image Finderscope, Tube Rings and Dovetail Mounting Bar 

    From £ 2,025.00 Tax included
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  • From £ 3,999.00 Delivery In 1-5 Days* Tax included

    F/7 SUPER APO TRIPLET REFRACTOR  2” Dielectric Star Diagonal, 28mm 2” LET Eyepiece, 9x50 Right-Angled Erect Image Finderscope, Tube Rings and Dovetail Mounting Bar

    From £ 3,999.00 Tax included
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  • From £ 1,005.50 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 £ 1,005.50 Tax included
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  • £ 725.50 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. 

    £ 725.50 Tax included
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  • £ 769.00 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

    £ 769.00 Tax included
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  • £ 1,110.50 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.

    £ 1,110.50 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 264.50 Delivery In 1-5 Days* Tax included

    An excellent white light solar refractor by adding some Baader Astrosolar over the front aperture. An affordable instrument for schools to purchase for science project astronomical observing. 120mm is easily enough for visibility of all Messier objects as well as good lunar and planetary detail.

    £ 264.50 Tax included
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  • £ 1,599.00 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.

    £ 1,599.00 Tax included
    1-5 Days UK Delivery*
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  • £ 535.50 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.

    £ 535.50 Tax included
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  • £ 289.00 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...

    £ 289.00 Tax included
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  • £ 499.00 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.

    £ 499.00 Tax included
    1-5 Days UK Delivery*
    Delivery In 1-5 Days*
  • £ 181.50 Delivery In 1-5 Days* Tax included

    An excellent rich-field low and medium power small refractor for casual astronomy. A very economic way to own a large aperture spotting scope, or as a guidescope on a larger instrument. Short enough to sit comfortably on Celestron and Meade SCTs, or mounted parallel on a dual saddle plate. 

    £ 181.50 Tax included
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Showing 1 - 30 of 47 items