TeleVue Eyepiece Ethos 8mm 1.25"/2" (14203)

TeleVue Ethos 8 mm Eyepiece 1.25"/2" (Model 14203)

The TeleVue Ethos 8 mm eyepiece delivers an exceptionally wide and immersive observing experience, designed for astronomers who want maximum field of view combined with premium optical performance. As part of the renowned Ethos series, it creates a dramatic, spacewalk-like effect that removes the sensation of looking through a narrow tube. The result is a natural, expansive view that transforms visual observation.

An Immersive, Limitless Field of View

While traditional eyepieces typically offered 50° to 60° fields of view, the Ethos 8 mm provides an impressive 100° apparent field of view. Compared to an 82° eyepiece, this represents roughly a 50% increase in visible sky area. The wide field eliminates the “tunnel effect,” delivering a panoramic perspective that feels open and unrestricted.

Outstanding Sharpness and Optical Quality

The Ethos 8 mm maintains extremely high sharpness across the entire field, including the edges. It performs exceptionally well even with fast telescopes, such as systems with focal ratios around f/4. Its advanced optical design, combined with high-quality multi-coatings, ensures excellent light transmission, contrast, and color fidelity. Fine planetary details and subtle deep-sky structures are rendered with clarity and brilliance.

Versatility and Comfort

The Ethos series is available in multiple focal lengths to suit a wide variety of telescopes and observing styles. Depending on the focal length, models are compatible with 1.25" and/or 2" focusers. A foldable rubber eyecup enhances viewing comfort and helps shield stray light during extended observing sessions. The eyepiece is also homofocal within the series, minimizing refocusing when switching between Ethos models.

The Ethos line has received widespread recognition and multiple awards from respected astronomy publications, 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
1.25" or 2" compatibility depending on model

Optical Specifications
Focal length: 8 mm
Apparent field of view: 100°
Optical coating: Multi-coated
Telescope connection: 1.25"

Special Features
Foldable eyecup
Homofocal within the series: Yes
Filter thread: Yes
Inert gas purging: No

General Information
Series: Ethos
Type: Eyepiece
Design: Ultra Wide Angle (UWA)
Weight: 431 g