TeleVue Ethos 3.7mm Eyepiece 110° 1.25″/2″
The TeleVue Ethos 3.7mm eyepiece represents the pinnacle of optical technology in astronomical eyepieces. This revolutionary series was designed by Tele Vue company president David Nagler with the goal of creating an eyepiece with characteristics that define the TeleVue brand ethos: high contrast, comfortable eye relief, and perfect sharpness across the entire field of view. Thanks to advanced optical design and precision manufacturing, this eyepiece offers an unprecedented stargazing experience.
Advanced Optical Design
The optical construction of this eyepiece is the result of careful engineering approach that controls all key aberrations including astigmatism, field curvature, lateral aberrations, and angular magnification distortion. Image sharpness is ensured by the optical design itself, while high contrast is achieved through intelligent use of matte-finished field stops and highly efficient anti-reflection coatings with extremely low reflectivity. These coatings are specially matched to the composition of individual optical elements for maximum performance.
Ultra-Wide 110° Field of View
The 110° field of view of this eyepiece is more than 50% larger than standard eyepieces with 82° viewing angle. This feature makes the TeleVue Ethos eyepiece a universal tool that essentially replaces several conventional eyepieces. It provides true field size comparable to eyepieces with longer focal lengths and narrower fields, while offering the advantages of higher magnification and darker sky background for better object contrast.
Specifications and Performance
- Focal length: 3.7mm
- Field of view: 110°
- Eye relief: 15mm
- Barrel size: 1.25″/2″ dual fitting
- Weight: 499 grams
- Design type: XWA (Extra Wide Angle)
Ideal Applications
With its 3.7mm focal length, this eyepiece is ideal for observing planetary details, double stars, and other objects requiring high magnification. The 15mm eye relief ensures comfortable viewing even for eyeglass wearers, while low exit pupil sensitivity allows use even in daylight conditions. The robust 499-gram weight testifies to solid construction and quality materials used in manufacturing.
Universal Compatibility
The universal 1.25″/2″ connection ensures compatibility with a wide range of telescopes, while the XWA (Extra Wide Angle) assembly type guarantees exceptional optical properties across the entire field of view. This eyepiece is an investment in long-term astronomical observation at the highest level.
About TeleVue Brand Excellence
TeleVue is synonymous with outstanding quality in astronomical optics. The company is renowned for its internally designed eyepieces and telescopes from legendary Al Nagler, who revolutionized the world of astronomical eyepieces. The TeleVue brand has long focused on innovation and perfection, which is reflected in every product. Their eyepieces are valued by astronomers worldwide for their exceptional optical properties, robust construction, and reliability. Choosing TeleVue means investing in premium astronomical technology that provides unforgettable experiences observing the universe.
