Design: 3-element Kellner design
Description: 1.25 inch wide field eyepiece. Somewhere around a 65 degree FOV
These EPs from Harry Siebert are another great value like the UO EPs. I just received the 12.5mm 3-element Kellner design 65 degree FOV. This is a very good EP for $40 what a deal. This EP shows more color on Jupiter than any of my other EPs - Radian, Plossl, Ortho ect... Not as sharp as the UO Ortho but close. Contrast is good and the 65 degree FOV is nice. If your looking for a good planetary or DSO EP these EPs are excellent. Also Harry is the best person to deal with. He answers every email with in hours. Thanks bob hart.