Housed in a 2" barrel like the 35mm, the 27mm is lighter & smaller.
It's perfect for any telescope size, type or speed, where a little more
magnification is desired, yet still allows full field viewing with
eyeglasses. For example, with the Tele Vue-102, it gives 33x and a true
field of 2 degrees!
Concept: 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. I later
developed this idea into the Powermates.
— Al Nagler
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