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Sky Watcher - Nirvana Ultra Wide 82°

Sky Watcher - Aero 2" ED Eyepieces 68°

Baader - Hyperion Modular Eyepiece 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°

Oculairen - Accessoires

Uitverkoop oculairen wegens stopzetting afdeling telescopen

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° - 28 mm 2"


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


224,25EUR

Aan winkelwagentje toevoegen

(299-25%)



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


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


143,20EUR

Aan winkelwagentje toevoegen

(179-20%)



In stock


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Aero 2" ED 35mm


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


143,20EUR

Aan winkelwagentje toevoegen

(179-20%)



In stock


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Aero 2" ED 30mm


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


133,60EUR

Aan winkelwagentje toevoegen

(167-20%)



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 10mm


  • Schijnbaar gezichtsveld: (FOV): 68°
  • Eye Relief:  20 mm
  • Diameter: 1.25" en 2" 


93,75EUR

Aan winkelwagentje toevoegen

(125-25%)



In stock


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Hyperion Modular Eyepiece 21mm


  • Schijnbaar gezichtsveld: (FOV): 68°
  • Eye Relief:  20 mm
  • Diameter: 1.25" en 2" 


93,75EUR

Aan winkelwagentje toevoegen

(125-25%)



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 



18,00EUR

Aan winkelwagentje toevoegen

(24-25%)



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 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

Aan winkelwagentje toevoegen



In stock


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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




116,00EUR

Aan winkelwagentje toevoegen

(145-20%)



In stock

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 9 mm


  • Schijnbaar gezichtsveld: (FOV):  66° 
  • Eye Relief:  20 mm
  • Diameter: 1.25"


36,75EUR

Aan winkelwagentje toevoegen

(49-25%)



In stock


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Ultra Wide 20 mm


  • Schijnbaar gezichtsveld: (FOV):  66° 
  • Eye Relief:  20 mm
  • Diameter: 1.25"


36,75EUR

Aan winkelwagentje toevoegen

(49-25%)



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 19 mm


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




67,20EUR

Aan winkelwagentje toevoegen

(84-20%)



In stock


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ExtraFlat 27 mm


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




68,80EUR

Aan winkelwagentje toevoegen

(86-20%)



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


70,40EUR

Aan winkelwagentje toevoegen

(88-20%)



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


79,20EUR

Aan winkelwagentje toevoegen

(99-20%)



In stock

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 9 mm


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




44,25EUR

Aan winkelwagentje toevoegen

(59-25%)



In stock

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. 



175,20EUR

Aan winkelwagentje toevoegen

(219-20%)



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


32,40EUR

Aan winkelwagentje toevoegen

(54-40%)



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

Aan winkelwagentje toevoegen

(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

Aan winkelwagentje toevoegen

(52-25%)



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

Aan winkelwagentje toevoegen

(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


18,75EUR

Aan winkelwagentje toevoegen

(25-25%)



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

Aan winkelwagentje toevoegen



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


22,40EUR

Aan winkelwagentje toevoegen

(32-30%)



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.


6,30EUR

Aan winkelwagentje toevoegen

(9-30%)



In stock


OPTIEK VAN GROOTVEN B.V.B.A.
Opticien-Optometrist 
03 887 96 49 of  0475 68 41 83 
info@grootven.be