Sky-Watcher LET 28mm 2" Eyepiece 56° AFOV

The Sky-Watcher 28mm LET 2" Eyepiece is an affordable yet high-quality astronomical accessory designed to deliver a superior stargazing experience. Utilizing a modified Kellner optical design, this eyepiece is renowned for its balanced performance, providing sharp images with minimal aberrations across a wide 56° apparent field of view. Its fully multicoated optics and blackened interior surfaces work in tandem to enhance light transmission and minimize internal reflections, resulting in bright, high-contrast views of celestial objects. Whether you are exploring lunar landscapes or searching for deep-sky nebulae, this 2-inch format eyepiece offers the performance needed to make it a valuable addition to any astronomer’s toolkit.

Comfort is at the forefront of the LET series design, featuring a large eye lens and a generous 20mm eye relief that makes it suitable for both beginners and experienced astronomers. The inclusion of a twist-up eyecup allows users, including those who wear eyeglasses, to enjoy extended viewing sessions without discomfort. Despite its advanced features and robust 2-inch construction, the eyepiece remains remarkably affordable and accessible to a wide range of enthusiasts. Compatible with any telescope featuring a 2-inch focuser, it provides a versatile and expansive window into the universe, capturing fine celestial details with ease.

Product Features in Detail

Expansive Wide-Field Viewing

The 28mm focal length combined with the 2-inch barrel allows this eyepiece to act as a "low-power finder." It provides a massive true field of view, making it much easier to locate large, faint objects like the Andromeda Galaxy or the Orion Nebula that might be cut off in smaller eyepieces.

Professional 2-Inch Interface

By utilizing the larger 2-inch format, the LET 28mm avoids the "keyhole effect" often found in high-magnification small eyepieces. The wider light path ensures that your telescope’s full light-gathering potential reaches your eye without vignetting or dimmed edges.

Ergonomic Twist-Up Adjustment

Unlike traditional fold-down rubber eyecups that can perish over time, the twist-up mechanism on the LET series is durable and precise. It allows you to mechanically lock in the exact height needed to prevent "blackouts" caused by improper eye placement.

Optical Contrast Enhancement

The interior of the eyepiece barrel is thoroughly blackened and threaded to kill stray light. This is essential when observing near a bright moon or under suburban light pollution, as it preserves the "jet black" sky background necessary to see faint nebulae.

Long Eye Relief for All Users

With 20mm of eye relief, this is one of the most comfortable eyepieces in its price bracket. Users don't have to "press" their eye against the glass, which prevents eyelash oils from smudging the lens and reduces eye strain during long nights at the telescope.

Exceptional Price-to-Performance Ratio

Sky-Watcher has optimized the Kellner design to compete with more expensive Plössl and wide-angle eyepieces. It provides a significant upgrade over the standard "in-the-box" eyepieces included with most telescopes, offering a more immersive experience for a fraction of the cost of premium glass.