Explore Scientific 100° Series 2" 9mm Waterproof Eyepiece

The 100° Series 9mm provides hyper-wide 100° views at a magnification that bridges planetary detail and deep-sky immersion. At 9mm, you get strong enough magnification for meaningful planetary and lunar detail while the 100° field delivers a sense of depth and space that narrower eyepieces simply cannot replicate. Premium multi-element optics and waterproof construction at $299 make this a direct competitor to eyepieces costing two to three times more.

Key Features

• 100° apparent field of view — hyper-wide immersive views that create a visceral sense of depth and spatial context around your target
• Premium multi-element optics — sharp, color-corrected images with strong performance across the full 100° field
• 2" barrel for maximum light throughput supporting the extreme field width
• Argon-purged waterproof housing — sealed and fog-proof for reliable all-weather performance
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces with edge-blackened elements
• Fold-down silicone rubber eyecup for comfortable eye positioning

Ideal For

• Versatile observers who want a single eyepiece that delivers immersive views of planets, the Moon, bright nebulae, and star clusters within a 100° field
• Deep-sky enthusiasts who value the "spacewalk" experience of ultra-wide fields when observing planetary nebulae, globular clusters, and galaxy groups
• Experienced visual astronomers who recognize that the jump from 82° to 100° creates a qualitatively different observing experience