Explore Scientific 100° Series 2" 20mm Waterproof Eyepiece

Explore Scientific 100° Series 2" 20mm Waterproof EyepieceThe 100 Series 20mm delivers immersive, hyper wide deep sky views at moderate magnification large nebulae, open clusters, and galaxy groups fill the 100 field with detail and surrounding context that creates a genuinely three dimensional sense of depth. The premium multi element optical design maintains sharpness across the enormous field. At $499 with argon purged waterproof construction, it offers 100 class wide field performance that directly

The 100° Series 20mm delivers immersive, hyper-wide deep-sky views at moderate magnification — large nebulae, open clusters, and galaxy groups fill the 100° field with detail and surrounding context that creates a genuinely three-dimensional sense of depth. The premium multi-element optical design maintains sharpness across the enormous field. At $499 with argon-purged waterproof construction, it offers 100°-class wide-field performance that directly challenges Tele Vue Ethos pricing.

Key Features

• 100° apparent field of view — the hyper-wide field creates an immersive, panoramic observing experience that standard wide-field eyepieces cannot approach
• Premium multi-element optics — sharp, color-corrected images with strong edge performance across the full 100° field
• 2" barrel for maximum light throughput and true wide-field delivery
• Argon-purged waterproof housing — sealed against moisture, fog, and temperature changes for all-season reliability
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces with edge-blackened elements for contrast
• Fold-down silicone rubber eyecup with comfortable eye relief for extended sessions

Ideal For

• Wide-field deep-sky observers framing large nebulae, open clusters, and galaxy groups within an immersive 100° panoramic view at moderate magnification
• Dobsonian and large-aperture telescope owners where a 20mm 100° provides an extraordinary combination of brightness, detail, and field width
• Observers seeking the Ethos experience at a more accessible price — the 100° series delivers comparable hyper-wide-field immersion