2" Tele Vue 41 mm Panoptic Eyepiece At the left is the 2" Tele Vue 41mm Panoptic 6 element - 4 group eyepiece.  It has a 68 ° Apparent Field of View, and 27 mm of built-in eye relief.  Used with the 2X Big Barlow Lens it provides for the 20mm eyepiece. With the 4X Powermate lens it also provides for the 10mm eyepiece.  It and the 55mm Plossl on the previous page both feature fully multicoated, edge blackened elements to eliminate internal reflections and ghosting.  This premium eyepiece is priced at $495.00 US.