TeleVue Eyepiece Ethos 17mm 2" (14204)

TeleVue Ethos 17 mm 2" Eyepiece (Model 14204)

The TeleVue Ethos 17 mm eyepiece delivers a breathtakingly wide and immersive observing experience, designed for astronomers who demand both expansive views and premium optical performance. As part of the acclaimed Ethos series, it creates a dramatic “spacewalk” sensation, eliminating the feeling of looking through a narrow tunnel. The result is a natural, panoramic perspective that transforms how the night sky is explored.

An Expansive, Immersive Field of View

While traditional eyepieces often offered 50° to 60° fields of view, and even 82° once seemed impressive, the Ethos 17 mm provides a massive 100° apparent field of view. Compared to an 82° eyepiece, this represents roughly a 50% increase in visible sky area. The wide field removes the tunnel effect, allowing observers to experience a more open and cinematic view of the universe.

Exceptional Sharpness and Optical Quality

The Ethos 17 mm maintains outstanding sharpness across the entire field, including the edges. It performs exceptionally well even with fast telescopes, such as those with focal ratios around f/4. A sophisticated optical design combined with high-quality multi-coatings ensures excellent light transmission, contrast, and color accuracy. Fine planetary details and delicate deep-sky structures are rendered with clarity and brilliance.

Versatility and Comfort

The Ethos series is available in multiple focal lengths, making it easy to find the ideal match for virtually any telescope. The 17 mm version features a 2" barrel connection for compatibility with larger focusers. A foldable rubber eyecup enhances viewing comfort and helps block stray light during extended observing sessions. The robust mechanical construction ensures durability and long-term reliability.

The Ethos line has received extensive praise from the astronomy community and multiple industry awards, reflecting its strong reputation among experienced observers.

Key Advantages
100° apparent field of view (110° for 3.7 mm and 4.7 mm models)
Extremely high sharpness across the entire field
Excellent performance with fast telescopes
High-contrast, premium optical quality
Comfortable viewing design
2" connection

Optical Specifications
Focal length: 17 mm
Apparent field of view: 100°
Optical coating: Multi-coated
Telescope connection: 2"

Special Features
Foldable eyecup
Filter thread: Yes
Inert gas purging: No

General Information
Series: Ethos
Type: Eyepiece
Design: Extra Wide Angle (XWA)
Length: 168 mm
Weight: 703 g