This eyepiece has the largest true field possible for 2 eyepiece holders -3 times the field area of any 1 1/4 eyepiece. The focal plane is placed at the end of the barrel to minimize vignetting. Performance with Schmidt-Cassegrains is remarkable since it avoids the image ...This eyepiece has the largest true field possible for 2 eyepiece holders -3 times the field area of any 1 1/4 eyepiece.
The focal plane is placed at the end of the barrel to minimize vignetting. Performance with Schmidt-Cassegrains is remarkable since it avoids the image degradation and severe vignetting which occurs when using telecompressors. Long eye-relief and unique adjustable eye guard for eyeglass wearers.
Age Group: adult.