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Black anodized aluminium twist-on eyeguard extender with rubber eyecup and protective cap

Tele Vue

Tele Vue Twist-On Eyeguard 8mm Extender

SKU CH-VRX2-5DKXR

Twist-on eyeguard extender raises eye relief by 8 mm and stacks for 16 mm total on 40 mm Plössl eyepieces

  • Custom eye relief via twist-on eyeguard for comfortable extended viewing
  • 8 mm extender increases magnification to reveal finer celestial details
  • Black anodized aluminium construction resists wear and maintains optical alignment
  • Stackable design allows 16 mm total height for improved solar contrast
  • Anti-reflection threads minimise glare for enhanced viewing experience

Twist-On Eyeguard Extender

The Tele Vue Twist-On Style Eyeguard Extender raises the eyeguard position by 8mm to improve eye relief during long observing sessions. It attaches to compatible Tele Vue eyepieces using a two-ring clamping system with anti-reflection threads. A rubber eyeguard and protective eyepiece cap are included for comfort and equipment protection.

Stackable Design Limits

The extender uses a stackable design that allows multiple units to be combined for greater height adjustment. Using two units adds a total of 16mm of extension, which can transform a 40mm Plossl into a more comfortable viewing tool. This modularity lets observers fine-tune eye relief to match personal preference or specific viewing conditions.

Solar And General Viewing Capacity

The added extension effectively blocks stray daylight, maximizing contrast for white-light or hydrogen-alpha solar observation. It also enhances comfort for general deep-sky and planetary viewing by providing a more relaxed eye position. The black anodized aluminum construction maintains optical alignment and resists wear through repeated attachment and removal cycles.

Highlights

  • Custom eye relief via twist-on eyeguard for comfortable extended viewing
  • 8 mm extender increases magnification to reveal finer celestial details
  • Black anodized aluminium construction resists wear and maintains optical alignment
  • Stackable design allows 16 mm total height for improved solar contrast
  • Anti-reflection threads minimise glare for enhanced viewing experience

Specifications

No published specifications for this item yet.

Questions about this item

How much extra eye relief does a single extender add, and can I stack them?

One extender raises the eyeguard by 8mm; using two together adds 16mm of height for even more comfort.

What practical benefit does the 8mm extension give during long observing sessions?

It lets you position the rubber eyeguard farther from the eyepiece lens, reducing eye strain and blocking stray light for better contrast.

How does the twist-on two-ring clamping system attach to my Tele Vue eyepiece?

The two threaded rings screw together around the eyepiece barrel, securing the extender without tools and keeping optical alignment intact.

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