ED102 Essential Air-Spaced Triplet APO

The Explore Scientific ED102 Essential Series is a premium air-spaced triplet apochromatic refractor combining genuine Hoya FCD1 extra-low dispersion glass with proprietary EMD multi-layer coatings to deliver razor-sharp, high-contrast images with virtually no chromatic aberration. Its 102mm aperture and 714mm focal length strike an excellent balance between light-gathering power and portability, making it ideal for both lunar and planetary observation as well as deep-sky astrophotography. The precision 2-inch dual-speed rack-and-pinion focuser provides smooth, stable focus control for visual observing and long-exposure imaging, while the diffraction-limited optics ensure exceptional detail across the field of view.