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Sky Watcher - Nirvana Ultra Wide 82°

Baader - Hyperion 2" Aspheric Eyepiece 72°

Baader - Hyperion Modular Eyepiece 68°

Sky Watcher - Aero 2" ED Eyepieces 68°

Orion - Stratus Wide Field 68°

Sky Watcher - Ultra Wide 66°

Sky Watcher - ExtraFlat Wide-Angle 60°

Orion - 2" DeepView 56°

Sky Watcher - Planetary UWA 58°

Sky Watcher - Super Plössl 52°

Oculairen - Accessoires

Sky Watcher - Nirvana Ultra Wide 82°

These top quality ultra wide angle 1.25” eyepieces offer an incredible jaw-dropping viewing experience to rival some of the leading premium eyepieces on the market, but at an extremely competitive price. The huge 82 degree apparent field of view, superb field-edge correction and excellent contrast combine to provide a wonderfully immersive and memorable observational adventure. All models are constructed with 7 lens elements in 4 separate groups. 12mm eye relief on all models.

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Nirvana UWA 82° - 7 mm


  • Brandpuntsafstand: 7 mm 
  • Schijnbaar gezichtsveld: (FOV): 82°
  • Eye Relief:  12 mm
  • Diameter: 1.25" (31.75 mm)

  • 129,00 EUR

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    Nirvana UWA 82° - 28 mm 2"


  • Brandpuntsafstand: 28 mm 
  • Schijnbaar gezichtsveld: (FOV):  82°
  • Eye Relief:  12 mm
  • Diameter 2" (50 mm)

  • 299,00 EUR

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    In stock

    Baader - Hyperion 2" Aspheric Eyepiece 72°

    Baader Planetarium has evolved the wide-field astronomical eyepiece to a new level. Introducing the worlds first production Astronomical Eyepieces to use aspheric surfaces, the 31mm and 36mm Baader Hyperion-Aspheric 72-deg Modular Eyepieces. This new technology has allowed Baader to eliminate eyepiece aberrations without the usual penalty of extra lens elements, excessive size and weight, or high cost.

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    Hyperion Aspheric 2" Eyepiece 31mm


    • The Hyperion-Aspherics freedom from blackouts, kidney beaning, and lack of distortion combines with their long eye relief to produce a view that is uncommonly comfortable and natural for all users.
    • The ultra-wide 72° field is extremely flat and distortionless (virtually free of angular magnification distortion).
    • Baaders renowned Phantom Group Multi-Coatings and thorough internal baffling produce an extremely bright and high contrast view that is free of scatter.
    • Hyperion Modularity Superb for projection imaging. The Hyperion-Aspherics are threaded to accept the full line of Hyperion Digital T-Rings. The clever use of 2"x24 TPI SCT threads for attaching the 2" barrel permits the Hyperion-Aspherics to directly thread onto the rear cell of popular SCTs. 
    • Dual Barrel Configuration two barrel sizes are provided with each Hyperion Aspheric. The standard 2" barrel provides the full 72-deg field size, and a special wide-field 1.25" barrel provides the maximum true field ever in a 1.25" format, with a field stop size of 1.265 (32mm)! 
    • Accepts popular astigmatism correcting lenses.
    • Weight: 390 g 

    162,00 EUR

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    In stock


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    Hyperion Aspheric 2" Eyepiece 36mm


    • Same eyepiece as above but F=36mm

    172,00 EUR

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    In stock

    Baader - Hyperion Modular Eyepiece 68°

    Modulaire oculairen van premium kwaliteit, reeds voorzien van draad een rechtstreekse aansluiting voor een camera adapter.
    Gezichtsveld 68°,  Eye relief: 20 mm.
    Deze oculairen kunnen ook gebruikt worden met Spotting Scopes van Zeiss en Celestron.

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    Hyperion Modular Eyepiece 5mm



    125,00 EUR

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    In stock


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    Hyperion Modular Eyepiece 8mm



    125,00 EUR

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    In stock


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    Hyperion Modular Eyepiece 13mm



    125,00 EUR

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    In stock


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    Hyperion Modular Eyepiece 21mm



    125,00 EUR

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    In stock


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    Hyperion Modular Eyepiece 24mm



    125,00 EUR

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    Hyperion Universal Zoom MARK IV 1¼" 8-24 mm Eyepiece


    • New fourth generation Hyperion: 80 gr. lighter - 4 mm more backfocus - smaller!
    • 48° to 68° apparent field of view
    • 55 mm diameter for better bino-viewer compability
    • With click-stop for focal lengths: 8/12/16/20/24mm
    • Including 1-25" and 2" chrome-plated barrel with SC thread and M43 photo thread
    • Including A- adapter for spotting scopes and B-adapter for telescopes.
    • Including adapter thread to all  Zeiss and Celestron spotting scopes.
    • Including 3 models eyecup: foldable, adjustable & winged with helical thread and soft pouch with belt strap

    249,00 EUR

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    In stock


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    Hyperion - T-Adapter M43/T2


    • Adapter voor oculairprojectie met Baader Hyperion of Morpheus oculairs.
    • Rechtstreekse bevestiging op het oculair, steeds perfecte uitlijning
    • Een T-ring is nog noodzakelijk 


    21,00 EUR

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    In stock

    Sky Watcher - Aero 2" ED Eyepieces 68°

    The 2” Aero SWA eyepieces feature a 6-element construction in four groups. Exotic ED glass is employed in the design to significantly reduce false colour. These eyepieces all feature impressively wide 68° fields of view, with virtually distortion-free images. Multi-coating is applied to all air-to-glass surfaces to increase light transmission and image contrast. All models feature edge-blackened lens edges and are parfocal. 

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    Aero 2" ED 40mm


    • Brandpuntsafstand: 40 mm 
    • Schijnbaar gezichtsveld: (FOV):  68°
    • Eye Relief:  20 mm
    • Diameter: 2" (50 mm)

    179,00 EUR

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    In stock


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    Aero 2" ED 35mm


    • Brandpuntsafstand: 38 mm 
    • Schijnbaar gezichtsveld: (FOV): 68°
    • Eye Relief:  17.5 mm
    • Diameter: 2" (50 mm)

    179,00 EUR

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    In stock


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    Aero 2" ED 30mm


    • Brandpuntsafstand: 30 mm 
    • Schijnbaar gezichtsveld: (FOV): 68°
    • Eye Relief:  16.5 mm
    • Diameter: 2" (50 mm)

    167,00 EUR

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    In stock

    Orion - Stratus Wide Field 68°

    Stratus eyepieces deliver a wide 68° field of view which allows you to see much more than a typical 52° Plossl. The 8-element optics give you sharp, high contrast images across the field. The generous eye relief makes viewing comfortable for all.

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    Orion - Stratus 3.5 mm Wide-Field Eyepiece


    • This 3.5mm Stratus eyepiece from Orion sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief
    • Boasts a 68 degree apparent field of view for a wide-field window into the heavens
    • Eyepiece optics are fully multi-coated to maximize light transmission
    • Lens edges are blackened to ensure excellent contrast
    • Can be used in either a 2" or 1.25" telescope focuser or diagonal



    145,00 EUR

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    Uitverkocht


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    Orion - Stratus 5 mm Wide-Field Eyepiece


    • The ultimate in viewing comfort - our 5mm Stratus telescope eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief
    • An ideal eyepiece for high-power yet wide-field views through a telescope of the Moon, planets and bright deep sky objects
    • Large 68-degree apparent field of view for a nice and wide window into the heavens
    • Fully multi-coated optical elements feature blackened lens edges for maximized light transmission and excellent contrast
    • Usable in both 1.25" and larger 2" telescope focusers thanks to its dual-purpose body

    145,00 EUR

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    In stock


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    Orion - Stratus 8 mm Wide-Field Eyepiece


    • The ultimate in viewing comfort - this 8mm telescope eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief
    • An ideal eyepiece for high-power yet wide-field views of the Moon, planets and bright deep sky objects through a telescope
    • Offers a 68-degree apparent field of view for a nice and wide window into the heavens
    • Eyepiece optics are fully multi-coated and feature blackened lens edges for maximized light transmission and excellent contrast
    • Usable in both 1.25" and larger 2" telescope focusers thanks to its dual-purpose body

    145,00 EUR

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    Uitverkocht


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    Orion - Stratus 13 mm Wide-Field Eyepiece


    • The ultimate in viewing comfort - this 13mm telescope eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief
    • Ideal for moderate-power, wide-field views of the Moon, planets and any deep sky object
    • Provides a 68-degree apparent field of view for a nice and wide window into the heavens
    • Usable in both 1.25" and larger 2" telescope focusers thanks to its dual-purpose body
    • Optics are fully multi-coated and feature blackened lens edges for maximized light transmission and excellent contrast

    145,00 EUR

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    In stock


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    Orion - Stratus 17 mm Wide-Field Eyepiece


    • This 17mm Orion Stratus eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief for exceptional viewing comfort
    • An ideal telescope eyepiece for wide-field, moderate magnification views of the Moon, planets and bright deep sky objects
    • Offers a 68 degree apparent field of view for a nice and wide window into the heavens
    • Eyepiece is usable in both 1.25" and larger 2" focusers thanks to its dual-purpose body
    • Optics are fully multi-coated and feature blackened lens edges for maximized light transmission and excellent contrast

    145,00 EUR

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    Uitverkocht


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    Orion - Stratus 21 mm Wide-Field Eyepiece


    • This 21mm telescope eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief
    • Stratus offers a 68° apparent field of view for a wide-field window into the heavens
    • Eyepiece optics are fully multi-coated to maximize light transmission
    • Lens edges are blackened to ensure excellent contrast in every view
    • Threaded for use with 1.25" eyepiece filters - can be used in both 1.25" and 2" telescope focusers



    145,00 EUR

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    In stock


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    Orion - Stratus 24 mm Wide-Field Eyepiece


    • Amazing viewing comfort - this 24mm eyepiece sports a monster 1.25" diameter eye lens and a substantial 15mm eye relief
    • An ideal eyepiece for wide-field low-power views of the Moon, planets and bright deep sky objects
    • Offers a 68 degree apparent field of view for a nice and wide window into the heavens
    • Usable in both 1.25" and larger 2" telescope focusers thanks to its dual-purpose body
    • Fully multi-coated optics feature blackened lens edges for maximized light transmission and excellent contrast

    145,00 EUR

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    Uitverkocht

    Sky Watcher - Ultra Wide 66°

    These Sky-Watcher Ultra-Wide Angle, Multi-Coated, Long Eye Relief eyepieces offer a generous 66º apparent field of view. They provide sharp images right across the field. Rubber eyepieces are included for viewing comfort and to exclude extraneous light.

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    Ultra Wide 6 mm


    • Brandpuntsafstand: 6 mm
    • Schijnbaar gezichtsveld: (FOV):  66° 
    • Eye Relief:  20 mm

    49,00 EUR

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    Ultra Wide 9 mm


    • Brandpuntsafstand:  9 mm
    • Schijnbaar gezichtsveld: (FOV): 66° 
    •  Eye Relief: 20 mm

    49,00 EUR

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    In stock


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    Ultra Wide 15 mm


    • Brandpuntsafstand: 15 mm
    • Schijnbaar gezichtsveld: (FOV):  66°
    • Eye Relief:  20 mm

    49,00 EUR

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    In stock

    Sky Watcher - ExtraFlat Wide-Angle 60°

    The exotic 1.25” ExtraFlat™ 5 or 6-element eyepiece design packs premium features and high-end performance into a surprisingly affordable package. The optical designer has succeeded to remove peripheral field curvature so now you can enjoy flat, virtually distortion-free images from the centre-to-edge of the field. Optical performance is impressive, with excellent sharpness, contrast and colour rendition. All models feature oversized eye-lens elements, wide fields of view, long eye-relief for spectacle wearers, and soft twist-up rubber eyecups for comfortable viewing.  

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    ExtraFlat 16


    • Brandpuntsafstand: 16 mm
    • Schijnbaar gezichtsveld: 60°
    • Eye Relief: 17 mm
    • Diameter: 1.25" (31.75 mm)



    84,00 EUR

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    In stock


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    ExtraFlat 19


    • Brandpuntsafstand: 19 mm
    • Schijnbaar gezichtsveld: 65°
    • Eye Relief: 19 mm
    • Diameter: 1.25" (31.75 mm)



    84,00 EUR

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    In stock


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    ExtraFlat 27


    • Brandpuntsafstand: 27 mm
    • Schijnbaar gezichtsveld: 53°
    • Eye Relief: 23 mm
    • Diameter: 1.25" (31.75 mm)



    86,00 EUR

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    In stock

    Orion - 2" DeepView 56°

    2" eyepieces at an affordable price! The Orion DeepView 3-element design provides bright images and great contrast. Apparent fields of view for the 28mm and 35mm eyepieces are a generous 56°, while the lower-power 42mm boasts a 52° apparent field of view. Long eye relief allows for comfortable viewing even with eyeglasses and the barrel is threaded to accept standard 2" eyepiece filters.

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    Orion - 2" DeepView 28 mm


    • This big, 2" eyepiece with 28mm focal length offers bright, sharp and pleasing views of deep-space objects
    • 3-element lens design with multi-coatings for efficient light transmission
    • Eye relief is a long 20mm, particularly attractive to eyeglass wearers
    • Delightfully free of pincushion distortion and chromatic aberration
    • Threaded for use with 2" eyepiece filters

    88,00 EUR

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    In stock


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    Orion - 2" DeepView 35 mm


    • This 35mm focal length 2" telescope eyepiece offers bright, sharp and pleasing images of deep-space objects
    • 3-element eyepiece lens design with multi-coatings for efficient light transmission
    • Eyepiece eye relief is a long 20mm, ensuring comfortable views for eyeglass wearers and all astronomers
    • Delightfully free of pincushion distortion and chromatic aberration
    • Threaded for use with 2" Orion eyepiece filters

    99,00 EUR

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    In stock


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    Orion - 2" DeepView 42 mm


    • This 42mm 2" telescope eyepiece offers bright, sharp and pleasing images of deep-space objects
    • Eyepiece's 3-element lens design with multi-coatings ensures efficient light transmission for clear, vivid views
    • Eye relief is a long 20mm, particularly attractive to eyeglass wearers
    • Views through the 42mm DeepView eyepiece are delightfully free of pincushion distortion and chromatic aberration
    • Threaded for use with 2" eyepiece filters

    99,00 EUR

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    Sky Watcher - Planetary UWA 58°

    The new Sky-Watcher Planetary eyepieces are ideal when high magnification is required for the observation of fine planetary and lunar detail.

    Based on a modified Plossl design, these fully multi-coated eyepieces are constructed with five lens elements, and are characterised by their wide 58 degree field of view, low distortion, high contrast performance and comfortable operation.

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    Sky Watcher - Planetary Eyepiece UWA 2.5 mm


    • Brandpuntsafstand: 2.5 mm
    • Schijnbaar gezichtsveld: 58°
    • Eye Relief: 16 mm
    • Diameter: 1.25" (31.75mm)



    59,00 EUR

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    In stock


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    Sky Watcher - Planetary Eyepiece UWA 5 mm


    • Brandpuntsafstand: 5 mm
    • Schijnbaar gezichtsveld: 58°
    • Eye Relief: 16 mm
    • Diameter: 1.25" (31.75mm)



    59,00 EUR

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    Uitverkocht


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    Sky Watcher - Planetary Eyepiece UWA 6 mm


    • Brandpuntsafstand: 6 mm
    • Schijnbaar gezichtsveld: 58°
    • Eye Relief: 16 mm
    • Diameter: 1.25" (31.75 mm)



    59,00 EUR

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    Uitverkocht


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    Sky Watcher - Planetary Eyepiece UWA 7 mm


    • Brandpuntsafstand: 7 mm
    • Schijnbaar gezichtsveld: 58°
    • Eye Relief: 16 mm
    • Diameter: 1.25" (31.75 mm)



    59,00 EUR

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    In stock


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    Sky Watcher - Planetary Eyepiece UWA 9 mm


    • Brandpuntsafstand: 9 mm
    • Schijnbaar gezichtsveld: 58°
    • Eye Relief: 16 mm
    • Diameter: 1.25" (31.75 mm)



    59,00 EUR

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    In stock

    Sky Watcher - Super Plössl 52°

    These standard 1.25"/31.7mm eyepieces set high performance standards for modern telescope oculars. The proven 4-element Plossl designs display edge-to-edge pinpoint imaging across their panoramic 52º fields. Utilisation of top quality optical glass, superior multi-layer coatings and edge-blackened elements deliver superb high contrast images.

    'SP-Series' eyepieces minimise spherical aberration, distortion, astigmatism and off-axis colour, whilst their oversized optical elements afford the observer luxurious eye relief. 

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    Super-Plössl 10


    • Brandpuntsafstand: 10 mm
    • Schijnbaar gezichtsveld: 52° 
    • Eye Relief:  5 mm 

    42,00 EUR

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    Super-Plössl 12,5


    • Brandpuntsafstand: 12.5 mm
    • Schijnbaar gezichtsveld: 52° 
    • Eye Relief:  5 mm 

    42,00 EUR

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    In stock


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    Super-Plössl 17


    • Brandpuntsafstand: 17 mm
    • Schijnbaar gezichtsveld: 52° 
    • Eye Relief:  13 mm 

    48,00 EUR

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    In stock
     
    Super-Plössl 20


    • Brandpuntsafstand: 20 mm
    • Schijnbaar gezichtsveld: 52° 
    • Eye Relief:  20 mm

    48,00 EUR

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    In stock


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    Super-Plössl 32


    • Brandpuntsafstand: 32 mm
    • Schijnbaar gezichtsveld: 52° 
    • Eye Relief:  22 mm 

    59,00 EUR

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    Uitverkocht


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    Super-Plössl 40


    • Brandpuntsafstand: 40 mm
    • Schijnbaar gezichtsveld: 52° 
    • Eye Relief:  31 mm 

    59,00 EUR

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    Uitverkocht

    Oculairen - Accessoires

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    Sky Watcher - BinoViewer


    • Met deze Binoviewer bekomt u het ongelooflijke gevoel "tussen de sterren" te zitten én het  is bovendien  een uitstekend hulpmiddel om oogstress te vermijden.
    • De Binoviewer is uitgerust met high quality BaK-4 prisma's voor een scherper en contrastrijker beeld.
    • Een x2 Barlow lens is bijgeleverd voor verdubbeling van de vergroting of voor focusers met onvoldoende back travel.
    • Geleverd in een stevig aluminium koffertje. 


    219,00 EUR

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    In stock


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    Baader - Q-Turret Revolver


    • Revolverkop voor 4 oculairen, diameter 1.25"
    • Voorzien van een Click Stop.
    • Draad voor filters aanwezig  (1 filter, 4 oculairen)
    • Past in alle telescopen met 1.25" oculair vatting

    54,00 EUR

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    In stock


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    Orion - Waist Case™ Accessory Holder


    • This handy belt-equipped accessory case keeps your most often-used accessories organized, protected, and within easy reach
    • Rugged polyester hip pack designed exclusively for the amateur astronomer features a custom foam interior with seven die-cut holes to hold telescope eyepieces, Barlow lenses, eyepiece filters, and more!
    • WaistCase includes pockets on top, in front, and on the side for holding filters and other smaller accessories
    • Top flap can be folded back for easy-access to your eyepieces and accessories in the field
    • Belt adjusts to waist sizes up to 145cm.


    39,00EUR

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    (52-25%)



    In stock


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    Orion - Medium Eyepiece Accessory Case


    • Tough ABS-clad hard case protects and organizes your valuable telescope accessories
    • Die-cut foam holes, bins and slots with egg-crate foam-lined lid to safely store and transport your astronomy accessories
    • Durable, textured ABS-clad exterior with reinforced edging, dual metal hinges and two lockable metal latches
    • Holds up to eight 1.25" telescope eyepieces, plus bins for sundry astronomy accessories such as Barlow lenses, finders, filters, and more
    • Internal dimensions: 12.2" x 8.3" x 5.0"


    39,00EUR

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    (52-25%)



    In stock


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    Orion - Large Deluxe Accessory Case


    • Super-tough ABS-clad hard case protects and organizes your valuable telescope accessories
    • Die-cut foam holes, bins and slots with egg-crate foam-lined lid to safely store and transport your telescope eyepieces, Barlow lenses, filters, adapters, and more
    • Durable ABS-clad case exterior with reinforced edging, dual metal hinges and two lockable metal latches
    • Holds up to eight 1.25" telescope eyepieces, three 2" eyepieces plus nine other compartments for miscellaneous astronomy accessories
    • Internal case dimensions: 43 x 30.5 x 8.5 cm.

    60,00 EUR

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    In stock


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    Orion - Large Deluxe Pluck-Foam Accessory Case


    • Our Large Deluxe Accessory Case with a customizable pluck-foam interior
    • You choose how to arrange the interior space of the accessory case to fit all your astronomy gear just the way you like
    • Ideal for safe, clean, and secure storage and transport of telescope eyepieces, filters, Barlow lenses, collimation tools, finder scopes, and more
    • Internal dimensions: 43 x 30.5 x 8.5 cm.
    • Durable, textured ABS-clad exterior with reinforced edging, dual metal hinges and two lockable metal latches


    44,25EUR

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    (59-25%)



    In stock


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    Orion - Extention Tube 1.25"


    • Versatile extension adapter for 1.25" telescope eyepieces and accessories adds 2" of extension
    • Provides extra focuser back travel which is often needed for short-range terrestrial viewing or astrophotographic applications
    • Includes two thumbscrews for securing inserted telescope eyepieces or accessories
    • Threaded for use with 1.25" telescope eyepiece filters
    •  Made of anodized machined aluminum

    25,00 EUR

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    In stock


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    Orion® - Extention Tube 2"


    • Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope, or for astrophotographic applications Adds 2" of extension, fits in 2" telescope focusers, and accepts 2" eyepieces or accessories
    • Features two locking thumbscrews to secure any inserted astronomy accessory
    • Threaded for use with 2" Orion eyepiece and astrophotography filters
    •  Machined and anodized aluminum tube

    29,00 EUR

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    In stock


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    Orion - Long 2" Adapter for Crayford-Type Focuser


    • Adapter designed for use with the Orion 2" single speed Crayford focuser to allow focus to be achieved with some reflector telescope optical tubes
    • Provides extra height needed when single-speed Crayford focuser is used with Orion 203mm f/4.9 and 254mm f/4.7 reflector optical tubes
    • Adapter is not required for use of single-speed Crayford focuser on Orion Dobsonian telescopes
    • Allows visual use of eyepieces with specialty focuser and some mounted reflector telescope tubes
    • Made of anodized aluminum

    15,00 EUR

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    In stock


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    Orion - T-Thread Spacer Ring Kit


    •  Use the Orion T-Thread Spacer Ring Kit to achieve proper spacing with astrophotography equipment and avoid fuzzy, out of focus images
    • Includes 5mm, 10mm, and 25mm T-threaded spacer rings - mix and match depending on your needs
    • Each ring features an easy-grip knurled exterior for convenient use
    • Glare-reducing threaded interior maximizes contrast, made of rugged black anodized aluminum

    32,00 EUR

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    In stock


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    ScopeTronix - 2" Parafocalizing Ring


    • Parafocalizing ring voor 2" (50 mm) oculairs.
    • Deze ring wordt over de oculairvatting geschoven zodat de scherpstelling steeds op dezelfde plaats gebeurd, handig bij bv. fotografie.
    • Kan ook gebruikt worden om zenitprisma of -spiegel te beschermen tegen beschadiging door de oculairvatting.

    9,00 EUR

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    In stock


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    Za
    9.00 tot 12.15u - 's Namiddags gesloten

    OPTIEK VAN GROOTVEN B.V.B.A.
    Opticien-Optometrist 
    Kapellestraat 24
    2630 Aartselaar - 03 887 73 93 of  0471 68 41 83
    info@grootven.be
    Parking naast de zaak - Poort binnenrijden