Refractor telescopes

When it comes to refractor telescopes you have a lot of choice at Ganymedes, the telescopes and binoculars store in the Netherlands. You will find complete refractor telescope systems as well as separate refractor tubes in our range. Whatever your wishes and requirements are, we are happy to help you find the refractor telescope for you. With us you always choose from renowned brands, including William Optics and Celestron.

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Which refractor telescope is right for you?

Ganymedes has a wide range of refractor telescopes. Choose the aperture, focal length and maximum meaningful magnification and resolution. What may be the weight and length of the tube? Are you going for a new model or a second-hand model? Whatever your wishes and requirements are: we are happy to help you find the refractor telescope for you. With us you always choose from renowned brands, including William Optics and Celestron.

William Optics ZenithStar 61 II

We could summarize the William Optics ZenithStar 61 II APO Doublet refractor as small and serious or seriously small. It’s a small, highly portable instrument with a 61mm aperture, f/5.9, two element FPL-53 color corrected ED doublet lens, which impresses, especially when used for astrophotography. In addition, this WO ZS61 II also has a 2″ R&P focusing device, cat handle bar, and a built-in Bahtinov mask. The ZenithStar 61 is the ideal travel companion and comes with a bag.

Read more about the William Optics ZenithStar 61 II here

William Optics RedCat 51 APO

If you are interested in both nature photography and (deep-sky) astro photography, a William Optics RedCat 51 is for you. The RedCat’s 51mm objective lens is made of top quality FPL-53 and FPL-51 glass (synthetic fluorite) that creates a flat frame image from corner to corner, even when the full circle of image is used with a full-frame camera. The built-in helical focusing device enables focusing in seconds, which is ideal for shooting wildlife, birds and other animals.
The 250mm focal length and fast f/4.9 allow short exposure times for astrophotography. The working distance of up to 59.70mm is ideal for using astrocameras and DSLR/SLR cameras. The 2″ thread in the T-ring also allows you to use a filter. The included Bahtinov mask helps focus astrophotographic objects and is integrated into the lens cap.

Read more about the William Optics RedCat here

William Optics GT81 IV

The William Optics GT81 IV APO telescope is a three element designed APO refractor. By using FPL-53 glass, this telescope offers excellent aberration correction. Sublime telescope for observing the moon and planets and photographing Deep Sky objects. Has a built-in clear Bahtinov mask. Smooth, stable and reliable, the 2.5″ Rack & Pinion focusing device does not suffer from image shifting and includes a newly designed camera angle rotator. The CNC rod is sturdy and has a nice appearance.

Read more about the William Optics GT81 IV here

William Optics FLT91

The FLT 91 is the perfect apochromatic refractor for visual and photographic astronomers who demand quality in a medium-sized telescope. The three-element optical design has a 91mm aperture with FPL-53 glass. The STM coatings and excellent quality ensure excellent optical performance and an unparalleled Strehl value, of at least 0.95 or higher. The focusing device of the FLT 91 is a 3.3 inch rack and pinion type. The focusing tube has an adapter to a 2-inch rotolock adapter. This adapter makes it possible to quickly change accessories, but also to clamp them properly without causing damage. Furthermore, the entire focusing device is rotatable, but there is also a built-in rotator with scale division. Larger buttons on the focusing device make focusing a pleasure.

Read more about the William Optics FluoStar 91 here

Order your product from stock

In our wide range you will only find the best refractor telescopes. Many of our products are therefore available from stock. In addition, our prices are very accessible. Have you found a product cheaper elsewhere? Then contact us! You can reach us at 020-6412083. We are happy to provide you with more information. We also tell you more about our microscopes and binoculars. You are also very welcome in our showroom in Amstelveen.

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Showing 1–24 of 87 results

  • Nieuw
    Airy Disk 60ED grijs refractor f/5.5 Doublet

    Airy Disk 60ED grijs refractor f/5.5 Doublet

    Aperture (mm): 60
    Focal length (mm): 330
    Speed ​​(f): 5.5
    Rated 0 out of 5
     729,00
    Available
  • Nieuw
    Airy Disk 60ED refractor f/5.5 Doublet

    Airy Disk 60ED wit refractor f/5.5 Doublet

    Aperture (mm): 60
    Focal length (mm): 330
    Speed ​​(f): 5.5
    Rated 0 out of 5
     729,00
    Available
  • Black Friday Deal
    Airy Disk APO 106mm f/6.6 triplet ED FCD-100 refractor

    Airy Disk APO 106mm f/6.6 triplet ED FCD-100 refractor

    Aperture (mm): 106
    Focal length (mm): 700
    Speed ​​(f): 6.6
    Rated 0 out of 5
    Sale! Original price was: € 1.899,00.Current price is: € 1.679,00.
    Available
  • Nieuw
    Airy Disk APO 96mm f/6 ED Apochromatic Refractor

    Airy Disk APO 96mm f/6 ED Apochromatic Refractor

    Aperture (mm): 96
    Focal length (mm): 575
    Speed ​​(f): 6
    Rated 0 out of 5
     1.099,00
    Available
  • Nieuw
    Askar 103 APO f/6.8 Triplet ED

    Askar 103 APO f/6.8 Triplet ED

    Aperture (mm): 103
    Focal length (mm): 700
    Speed ​​(f): 6.8
    Rated 0 out of 5
     1.339,00
    Ask us for the delivery time
  • Nieuw
    Askar 120 APO f/7 Triplet ED

    Askar 120 APO f/7 Triplet ED

    Aperture (mm): 120
    Focal length (mm): 840
    Speed ​​(f): 7
    Rated 0 out of 5
     1.995,00
    Available
  • Askar 140 APO f/7 Triplet ED

    Askar 140 APO f/7 Triplet ED

    Aperture (mm): 140
    Focal length (mm): 900
    Speed ​​(f): 7
    Rated 0 out of 5
     2.780,00
    Ask us for the delivery time
  • Askar 71F flat-field Quadruplet air-spaced APO

    Askar 71F flat-field Quadruplet air-spaced APO

    Aperture (mm): 71
    Focal length (mm): 490
    Speed ​​(f): 6.9
    Rated 0 out of 5
     735,00
    Ask us for the delivery time
  • Askar FMA135 f/4.5 APO flatfield Telephoto lens

    Askar FMA135 f/4.5 APO flatfield Telephoto lens

    Aperture (mm): 30
    Focal length (mm): 135
    Speed ​​(f): 4.5
    Rated 0 out of 5
     375,00
    Available
  • Askar FMA180 Pro 180 mm f/4.5 Apo lens

    Askar FMA180 Pro 180 mm f/4.5 Apo lens

    Aperture (mm): 40
    Focal length (mm): 180
    Speed ​​(f): 4.5
    Rated 0 out of 5
     489,00
    Available
  • Askar FRA400 72mm Quintuplet refractor

    Askar FRA400 72mm Quintuplet refractor

    Aperture (mm): 72
    Focal length (mm): 400
    Speed ​​(f): 5.6
    Rated 0 out of 5
     1.370,00
    Available
  • Nieuw
    Askar FRA500 90mm Flat Field Quintuplet

    Askar FRA500 90mm Flat Field Quintuplet

    Aperture (mm): 90
    Focal length (mm): 500
    Speed ​​(f): 5.6
    Rated 0 out of 5
     2.225,00
    Available
  • Nieuw
    Askar FRA600 Quintuplet refractor

    Askar FRA600 Quintuplet f5.6 refractor

    Aperture (mm): 108
    Focal length (mm): 600
    Speed ​​(f): 5.6
    Rated 0 out of 5
     2.845,00
    Available
  • Askar SQA55 Super Quintruplet Astrograph

    Askar SQA55 Super Quintruplet Astrograph

    Aperture (mm): 55
    Focal length (mm): 264
    Speed ​​(f): 4.8
    Rated 0 out of 5
     999,00
    Available
  • Celestron AstroMaster 70AZ met smartphone en maanfilter

    Celestron AstroMaster 70AZ met smartphone en maanfilter

    Aperture (mm): 70
    Focal length (mm): 900
    Speed ​​(f): 13
    Rated 0 out of 5
     199,00
    Available
  • Celestron StarSense Explorer LT 80AZ

    Celestron StarSense Explorer LT 80AZ

    Aperture (mm): 80
    Focal length (mm): 900
    Speed ​​(f): 11
    Rated 0 out of 5
     309,00
    Available
  • Jubileumdeal
    DWARF II smart telescoop deluxe uitvoering

    DWARF II smart telescoop deluxe uitvoering

    Aperture (mm): 24
    Focal length (mm): 100
    Speed ​​(f): 4.17
    Rated 0 out of 5
    Sale! Original price was: € 599,00.Current price is: € 539,00.
    Ask us for the delivery time
  • Occasion
    Occasion SkyWatcher Esprit 100ED met flattener

    Occasion SkyWatcher Esprit 100ED met flattener

    Rated 0 out of 5
     1.950,00
    Available
  • William Optics Fluorostar 91 apochromatic refractor rood

    Occasion William Optics Fluorostar 91 apochromatic refractor rood

    Aperture (mm): 91
    Focal length (mm): 540
    Speed ​​(f): 5.9
    Rated 0 out of 5
     2.395,00
    Available
  • William Optics ZenithStar 61 II Apo Goud

    Occasion William Optics ZenithStar 61II goud APO telescoop

    Aperture (mm): 61
    Focal length (mm): 360
    Speed ​​(f): 5.9
    Rated 0 out of 5
     599,00
    Ask us for the delivery time
  • Gratis Uniguide 32
    William Optics Cat 91 WIFD f/4.9

    William Optics Cat 91 WIFD f/4.9

    Aperture (mm): 91
    Focal length (mm): 448
    Speed ​​(f): 4.9
    Rated 0 out of 5
     3.199,00
    Available
  • William Optics Fluorostar 91 apochromatic refractor goud

    William Optics FluoroStar 120 apochromatic refractor goud

    Aperture (mm): 120
    Focal length (mm): 780
    Speed ​​(f): 6.5
    Rated 0 out of 5
     3.999,00
    Ask us for the delivery time
  • William Optics FluoroStar 120 apochromatic refractor rood

    William Optics FluoroStar 120 apochromatic refractor rood

    Aperture (mm): 120
    Focal length (mm): 780
    Speed ​​(f): 6.5
    Rated 0 out of 5
     3.999,00
    Ask us for the delivery time
  • William Optics Fluorostar 91 apochromatic refractor goud

    William Optics Fluorostar 91 apochromatic refractor goud

    Aperture (mm): 91
    Focal length (mm): 540
    Speed ​​(f): 5.9
    Rated 0 out of 5
     2.995,00
    Ask us for the delivery time
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Showing 1–24 of 87 results