Explore Scientific 92° ED Series Waterproof Eyepiece

Explore the night sky through an expansive 92° apparent field of view. Explore Scientific 92° ED Series waterproof eyepieces combine extra-low dispersion glass with long eye relief for comfortable observing and reduced colour fringing.Choose from four focal lengths to suit your telescope and observing targets. Every model uses a 2-inch barrel and requires a compatible 2-inch focuser or diagonal.Features 92° apparent field of view for immersive observing. ED glass helps improve contrast and colour correction. Waterproof construction for outdoor observing. Long eye relief supports a relaxed viewing position. Choose your focal length 9mm: Higher magnification for lunar and planetary detail and compact deep-sky targets. 14mm: A versatile step between higher-power detail and wider-field observing. 20mm: Lower magnification and a wider true field than the shorter focal lengths in the same telescope. 25mm: The widest true field in this series for sweeping star fields and framing larger targets. Magnification depends on your telescope: divide its focal length by the eyepiece focal length. Each variant is sold individually.Availability: Supplier currently lists this series for preorder. Contact Telescopes Canada to confirm availability and delivery timing.Specifications by focal length Focal length SKU Field stop Eye relief Optical design Dimensions (L × W) 9mm EPWP9209ED-01 13.5mm 18mm 9 elements in 6 groups 141 × 58mm 14mm EPWP9214ED-01 20.6mm 18mm 9 elements in 6 groups 141 × 60mm 20mm EPWP9220ED-01 31.7mm 20.2mm 9 elements in 6 groups 164 × 77mm 25mm EPWP9225ED-01 36.7mm 19.6mm 10 elements in 7 groups 143 × 76mm All four models feature a 92° apparent field, 2-inch barrel, H-FK61 extra-low dispersion glass (Abbe number 81.6), and multi-layer coatings. Manufacturer weights are not specified.