Celestron E-Lux 40mm 2" Eyepiece

About this product

Expand your telescope's optical horizon and funnel maximum light directly to your eye with the Celestron E-Lux 40mm 2" Eyepiece. Tailored for any telescope equipped with a 50.8 mm (2") focuser, this visual upgrade delivers sweeping, bright, low-power panoramas across a broad 56° field of view. It serves as an essential observing tool for navigating expansive star clusters and locating elusive deep-sky targets.

Panoramic Low-Power Exploration

When examining sprawling diffuse nebulae or open star clusters, gathering every trace of incoming photons is crucial. The 40 mm focal length yields gentle magnification and a broad exit pupil, capitalising on the true light-gathering potential of your telescope. Paired with a wide 56° apparent field of view, this eyepiece keeps expansive deep-sky formations neatly framed in a single vista.

Robust Housing and Glare Suppression

Machined from resilient aluminium, the outer body sports a black anodised surface built to endure frequent sessions under open night skies. Internally, the barrel is cut with specialized light-dispersion threads painted in a matte black finish to arrest unwanted reflections. Combined with fully multi-coated glass elements, this careful optical engineering guarantees crisp definition and rich visual contrast.

Key Features

• 40 mm Focal Length – Provides comfortable low magnification for sweeping wide-field scanning and locating faint targets.
• 3-Element Kellner Configuration – Features two optical groups treated with fully multi-coated surfaces to boost light throughput.
• 56° Apparent Field of View – Encompasses substantial swathes of sky to comfortably frame large celestial structures.
• Extended 36 mm Eye Relief – Offers generous physical space for strain-free viewing, ideal for spectacle wearers.
• Baffled Aluminium Barrel – Precision-cut internal light-dispersion threads damp internal reflections to preserve deep contrast.
• 50.8 mm (2") Filter Threads – Standard barrel threading directly mounts 50.8 mm (2") nebular and lunar filters.
• Fold-Down Rubber Eyeguard – Seals out peripheral ambient glare and folds back smoothly for personalised viewing comfort.

Specifications

Manuals & Downloads

• Product Manuals & Downloads
• User manual (PDF)