Baader Hyperion eyepiece 13mm

Introducing the latest multifunctional wide-angle eyepieces from Baader Hyperion, setting new benchmarks in quality and design:

These eyepieces offer a 68° field of view, the optimal angle for the human eye, ensuring the entire view remains visible even with slight head movements. Engineered with eight lens elements in five groups, they provide exceptional sharpness across the entire field and superb color fidelity to the very edges.

A unique feature of these eyepieces is their dual functionality. Using the 2" barrel without the negative achromat group, it functions as a wide-field, low-magnification eyepiece. With the 1.25" negative achromat group, it achieves nominal magnification, enhancing versatility.

Designed with high refractive index glass elements, these eyepieces minimize distortion and significantly reduce astigmatism. They also boast the shortest field stop among wide-field eyepieces currently known, and are specially tailored for binocular viewing.

Comfort during observation is paramount, with a design that avoids the common 'kidney-bean effect,' maintaining image visibility despite involuntary head movements—a common issue with many wide-field eyepiece designs.

These eyepieces also excel in projection photography. By replacing the eyecup with an M43-T2 adapter, they become compatible with SLR and digital cameras, offering numerous connection possibilities through various adapter rings. They can even accommodate video cameras and webcams. The option to adjust the focal length with spacers and the eyepiece's diameter compatible with bino-viewers makes them highly adaptable. Foldable eyecups provide ample eye relief for those wearing glasses.

Key Advantages:

• Superior craftsmanship for durable and precise performance.
• Relaxed and comfortable viewing with no visual strain.
• Expansive 68° field of view with unparalleled sharpness.
• Excellent color fidelity across the spectrum.
• Dual barrel usage (1.25" and 2") for versatile applications.
• Exceptionally low distortion and astigmatism.
• Absence of the 'kidney bean' effect.
• Baader Phantom Group coating™ employs a 7-layer broadband anti-reflection coating, minimizing residual reflection. Each type of glass receives a customized coating to maximize effectiveness, particularly at around 520nm in the green spectrum—where the human eye is most sensitive in low light conditions.

These coatings are virtually colorless, ensuring minimal light loss and preventing scattered light interference. If a lens exhibits a strong green reflection, it likely does not use Baader Phantom Group technology, indicating a less advanced coating that reflects significant light within the useful spectral range of 500-550nm.

Specifications:

Focal Length: 13 mm

Apparent Field of View: 68°

Eye Relief: 20 mm

Number of Lenses: 8

Number of Groups: 5

Telescope Connection: 2"

Optical System Coating: Multiple

Special Features:

Optional camera adapter: Yes

Adjustable eyecup: Folding

Filter thread: Yes

Inert gas charge: No

General:

Series: Hyperion

Type: Eyepiece

Build Type: SWA (Super Wide Angle)