Compare a penny to a half dollar to see the relative size between a 50 degree and 82 degree apparent field – almost 3 times the area difference! And while others boast of impressive apparent field sizes, Tele Vue’s philosophy of showing no field unless it’s fine stresses full field image quality as the ingredient for impressive views. Blackened lens edges, anti-reflection threads and rubber eyeguards deliver maximum contrast. Adapter skirts for 2″ focusers on larger 1.25″ models (12mm Nagler Type 4 and 22mm Panoptic) and rubber grip rings are additional Tele Vue “firsts”. Even 2″/1.25″ barrel models have an additional feature allowing the 2″ extension tube (EBX-2120) to be screwed on, which permits use of 2″ filters as well as 1.25″. 100% full field visual inspections on our own flat-field test instruments guarantees the performance of every Tele Vue eyepiece. The 7-element, Nagler Type 6 design is based on the origianl patented Nagler design. This new 7-element design update for the short focal length Nagler deserves its own designation. Using different exotic materials, coating processes and design ingenuity, A1 has massaged more eye-relief, contrast, and true field of view into the shorter focal length Naglers, while maintaining the absolute sharpness of the originals. Eye-relief is 12mm on each model, and all are sized about the same as the original 7mm! Weight about 0.4 to 05. lbs. Available in 13mm, 11mm, 9mm, 7mm, 5mm, 3.5, and 2.5mm focal lengths.
|