The Explore Scientific 102mm f/7 Classic White "Essential Series" Air-Spaced Triplet ED Apochromatic Refractor Telescope is a perfect instrument for demanding wide field observing and astrophotography. Rugged and portable, the Explore ED Triplet is a true three-element ...The Explore Scientific 102mm f/7 Classic White "Essential Series" Air-Spaced Triplet ED Apochromatic Refractor Telescope is a perfect instrument for demanding wide field observing and astrophotography. Rugged and portable, the Explore ED Triplet is a true three-element apochromatic telescope capable of producing research-level image quality.
The Critical Element: Optics Explore Scientific uses ED (Extra-low Dispersion) FCD1 (Dense Fluor Crown) glass developed and manufactured by Hoya Optical of Japan. Using the right glass with the appropriate properties enables the production of lenses that offer superior sharpness and color correction. Deluxe Two-Speed Focuser ES has included as standard equipment, on all Explore Scientific ED Series, a two-speed Crayford-style precision focuser with tension adjustment and lock to obtain and hold perfect focus.
EMD Coatings EMD (Enhanced Multi-layer Deposition) Coatings eliminates light scatter and maintains high image contrast. This proprietary coating is applied to all Explore Scientific lenses in multiple layers for added durability. Contrast is further enhanced by the installation of multiple baffles in the optical tube that mask and deflect unwanted stray light.