Baader Hyperion 68° 8mm Eyepiece - 1.25"/2"

A 68° Field of View at 8mm: High Power, Wide Context

The 8mm focal length delivers high power, ideal for resolving fine detail on Jupiter's cloud bands, splitting tight double stars, or examining the cores of globular clusters. Unlike traditional high-power eyepieces with restrictive views, the Hyperion's 68° apparent field of view provides a wide, comfortable window that keeps objects in sight longer in non-driven scopes and makes manual tracking feel less urgent.

Phantom Group Coatings: 7 Layers for Maximum Contrast

Baader's proprietary Phantom Group Coating is a 7-layer broadband anti-reflection system applied to every glass-to-air surface. This coating is specifically engineered to be most effective where the dark-adapted human eye is most sensitive—in the green part of the spectrum around 520nm. The result is a dramatic reduction in scattered light and internal reflections, leading to a darker sky background and visibly higher contrast at the eyepiece.

Two Integrated System Threads: M43 and SP54 for Imaging

The Hyperion 8mm is designed for both visual and photographic use. Removing the rubber eyecup reveals two distinct sets of threads for attaching cameras. The M43 thread allows for classic eyepiece projection imaging with a T-2 adapter, while the larger SP54 thread is designed for afocal projection with cameras whose lenses cannot be removed. This integrated system provides a secure, direct connection to your imaging equipment without the need for additional projection adapters.

• Focal Length Modularity: With optional Baader Fine Tuning Rings (FTRs), you can alter the eyepiece's effective focal length to achieve different magnifications without introducing the extra glass of a Barlow lens, preserving image brightness and sharpness.
• Filter Compatibility: The 1.25" barrel is threaded to accept standard 1.25" astronomy filters for enhancing planetary detail or reducing light pollution.

Dual 1.25" and 2" Barrels for Universal Compatibility

This eyepiece adapts to virtually any telescope focuser. It ships as a standard 1.25" eyepiece, but by simply unscrewing the lower chrome barrel, a 2" barrel is revealed. This dual-format design ensures you can use the Hyperion 8mm in any 1.25" or 2" diagonal or focuser, offering maximum flexibility as your equipment changes over time.

Hyperion 8mm vs. the 8-24mm Zoom: Sharpness vs. Flexibility

Baader offers both this 8mm fixed focal length eyepiece and a popular 8-24mm Clickstop Zoom. While the zoom offers unmatched convenience for finding and framing targets at various magnifications, a fixed ("prime") eyepiece like the 8mm Hyperion has a simpler optical design with fewer lens elements. This typically results in slightly higher light throughput and edge-of-field sharpness, making it the preferred choice for observers who prioritize the absolute best image fidelity at this specific magnification.