EXPLORE SCIENTIFIC 100° Ar Eyepiece 5.5mm (2inch)

EXPLORE SCIENTIFIC 100° Ar Eyepiece – 5.5mm (2")

Sold & Distributed by Modern Telescopes – India's Largest Telescope Store

Premium Review – Why This Eyepiece is a Game Changer for Serious Observers

The Explore Scientific 100° Series Ar 5.5mm Eyepiece (2") is built for astronomers who want nothing less than jaw-dropping, ultra-widefield immersive views. When you place your eye over this eyepiece, the sky appears boundless — a massive 100° apparent field of view (AFOV) turns your telescope into a space-window, effortlessly showcasing deep-sky objects, planets, clusters, nebulae and galaxies with impressive clarity.

This is not just an eyepiece — it’s an optical experience.

Precise multi-element optical design, advanced argon purging, waterproof construction, high-transmission coatings, and crisp edge-to-edge sharpness make it one of the most sought-after ultra-wide eyepieces in the world. If you want the starting point into 100-degree astronomy, the 5.5mm is a masterpiece you’ll be proud to own.

🔭 Key Optical Advantages

✔ Ultra-Wide 100° Apparent Field

Immerse yourself in deep-sky space like never before. Planets, starfields & nebulae feel expansive and floating in view — like astronauts see from orbit.

✔ Argon-Purged Body (Ar)

Unlike nitrogen-purged optics, argon molecules are larger & slower to escape. This ensures:

• Superior internal fog resistance

• Better long-term optical stability

• 100% waterproof & weather sealed

✔ Razor-Sharp Edge Performance

Even fast Dobsonian & reflector telescopes benefit from controlled astigmatism and field curvature, delivering sharp stars across the entire field.

✔ Superb for Planetary & Deep-Sky Observing

The 5.5mm focal length is perfect for:

• Jupiter & Saturn detail

• Lunar craters with texture & shadow depth

• Orion Nebula, Lagoon, Trifid

• Globular clusters like M13, M92 exploding with stars

• Planetary nebulae with structural detail

📦 Specifications