Pentax XO 2.5 Eyepiece
High-performance eyepieces are perfect for high-magnification observation and photography of the planets High-refraction, low-dispersion lanthanum glass elements to provide high-resolution images with minimal aberrationsPENTAX-original SMC full-surface multi-layer lens coating to improve light transmission efficiencyAdvanced computer simulation design technology was used to drastically reduce internal reflections producing brighter, clearer imagesJIS Class 4 weather proof construction makes these eyepieces more durableLimited Lifetime WarrantyX0 2.5Lens Structure:6 elements3 groupsFocal Length:2.58mmApparent...