Televue Plossl 55mm $170 including shipping in continental US aa
A must for deep sky fans. 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. Like new in box.