Televue Panoptic Eyepieces
"Using my Wide-Field design as a starting point, I looked to bring Nagler-like performance to the 60 degree+ field class with the Panoptic series. The idea of a lens to "interface" between the eyepiece and Barlow struck me as the proper way to keep size, weight and cost to a minimum while improving edge of field performance even further." - Al Nagler