Open your eyes and mind to Bino Vue. You're probably aware that the color correction and resolution of all high powered binoculars is far less than ideal. Usually the size, weight, cost, inconvenience and lack of interchangeable eyepieces render them undesirable for all but the most die hard fans. Limitations of ordinary 45 degree binocular attachments 1. The 45 degree angle is very uncomfortable for high angle viewing .
Interocular adjustments require refocusing.
The 45 degree angle makes it difficult to use with reflectors. An erector must be added for terrestrial viewing. We immediately recognized the advantages of a binocular attachment that adjusts interpupulary distance like an ordinary binocular and sets up as easily as changing an eyepiece. And, we use the largest prism apertures possible. Our special compensator lens system makes the Bino Vue parfocal when fully inserted to its stop and, results in only a 2x increase in magnification.