Whether a relaxed and impressive observation with a telescope is possible is significantly influenced by the choice of eyepiece. Fatigue from strained head positions and intense observation is not an issue with the excellent viewing behavior of this eyepiece. Enjoy the unique combination of outstanding image quality right to the edge of the field, even with fast optics, excellent contrast, and unparalleled observation comfort. Eyepieces that feature a perfect interplay of various modern glass materials and the highest standards in manufacturing and service have been a tradition at Explore Scientific. This eyepiece represents performance and durability. The foldable eyecups provide optimal user comfort. The patented EMD coating, in conjunction with internal baffles, ensures high contrast and prevents disturbing reflections. The argon filling effectively prevents internal fogging, and you need not worry about dust, mold, or the intrusion of cleaning fluids. The eyepiece is waterproof sealed, guaranteeing that you will enjoy these high-quality eyepieces for many years and countless observations.