Eyepiece Beta Hyperion 36 mm 2"/1.25" Aspherical for telescopes

Beta Hyperion 36 mm 2"/1.25" Aspherical eyepiece is a low-magnification, wide-field ocular engineered for telescopes with standard 2" and 1.25" focusers. With a 36 mm focal length it delivers expansive true-field views suited to deep-sky observation, star fields and extended objects. The aspherical lens element reduces spherical aberration and improves edge-to-edge sharpness, producing a flatter field and clearer detail across the full field of view. The eyepiece is compatible with a range of reflector and refractor optical systems that accept standard eyepiece diameters.

Advantages

The aspherical optical element minimizes off-axis aberrations, improving contrast and sharpness toward the field edge. A 36 mm focal length provides low power for wide-field sweeps and easier location of faint objects. Dual-format compatibility with 2" and 1.25" adapters allows flexible use on many telescope models without additional optics. Mechanical design is optimized for secure mounting and stable positioning in the focuser.

Suitable for

• Wide-field deep-sky observing (nebulae, star clusters, Milky Way panoramas)
• Scanning and locating faint objects at low magnification
• Comfortable visual sweeps and star-field appreciation
• Use on telescopes with 2" or 1.25" eyepiece holders

Key specifications

• Focal length: 36 mm
• Optical design: aspherical eyepiece element for reduced spherical aberration
• Field type: wide apparent field suited for low-power observation
• Mount compatibility: interchangeable fit for 2" and 1.25" focusers
• Intended use: visual astronomy for deep-sky objects and star fields

How to use

Install the eyepiece in the telescope focuser appropriate to the chosen adapter size (2" or 1.25"). Balance and collimation of the telescope should be checked beforehand for best image quality. Begin observing at low power to locate targets, then refine focus slowly until stars appear pinpoint and extended objects show structural detail. For long observing sessions, adjust eyepiece position and use an eyepiece retainer or set screw to secure the ocular and avoid mechanical slip.

Usage recommendations

Use with properly collimated optics and an appropriate mount to maximize sharpness across the field. When switching between 2" and 1.25" formats, ensure adapters are clean and fitted correctly. For faint deep-sky objects, observe from a dark site and allow your eyes to adapt to darkness to benefit from the eyepiece's wide-field capability.