Baader Hyperion eyepiece 17mm (8896)

The Baader Hyperion eyepieces represent a new level of sophistication and optical quality, designed to provide an exceptional viewing experience. With a 68° field of view, they offer a physiologically optimal angle for the human eye, ensuring the entire field remains visible even with slight head movements. These eyepieces deliver perfect sharpness across the entire field of view, thanks to their advanced design featuring 8 lens elements arranged in 5 groups. They also ensure excellent color fidelity right to the edge, making them ideal for both visual observations and imaging.

These eyepieces are multifunctional, effectively providing two focal lengths in one. When used with the 2" barrel without the negative achromat group, they function as low-magnification wide-field eyepieces. With the 1.25" negative achromat group attached, they deliver their nominal magnification. Their design minimizes distortion and astigmatism by incorporating high-refractive-index glass elements, ensuring crisp and accurate images.

Comfortable viewing is a priority with these eyepieces. They eliminate the "kidney-bean effect," so the image remains stable even with involuntary head movements. The eyepieces are also specifically designed for binocular viewing and are suitable for spectacle wearers due to their foldable eyecups and generous eye relief.

Advantages at a Glance

• High-quality workmanship
• Relaxed and comfortable viewing
• Large 68° field of view
• Perfect sharpness across the entire field
• Excellent color fidelity
• Dual use with 1.25" and 2" barrels
• Low distortion and astigmatism
• No "kidney-bean effect"

Baader Phantom Group Coating™
These eyepieces feature Baader's advanced Phantom Group coating™, a 7-layer broadband anti-reflection coating that ensures extremely low residual reflections. This coating is specifically optimized for night vision, targeting the human eye's sensitivity peak at around 520 nm in the green spectrum. The coatings are nearly colorless, ensuring minimal light loss and no interference from scattered light. Unlike lower-tech coatings that produce strong green reflections (indicating wasted light), Baader's coatings maximize light transmission across the visible spectrum.

The Phantom Group coating ensures that no light is lost in the critical spectral range between 500-550 nm, making these eyepieces highly efficient for night-adapted eyes.

Specifications

• Focal Length: 17 mm
• Apparent Field of View: 68°
• Eye Relief: 20 mm
• Number of Lenses/Groups: 8 lenses in 5 groups
• Connection to Telescope: 2" barrel (also compatible with 1.25")
• Optical Coating: Multi-coated (Phantom Group Coating™)

Special Features

• Optional camera adapter: Yes
• Adjustable eyepiece cup: Folding design
• Filter thread: Yes

General Information

• Series: Hyperion
• Type: Eyepiece (SWA - Super Wide Angle)

The Baader Hyperion eyepieces are an excellent choice for astronomers seeking premium performance combined with versatility. Whether used for visual observation or astrophotography, they deliver outstanding clarity, comfort, and flexibility for a wide range of applications.