The 55mm focal length has the largest true field possible for 2" eyepiece holders -3 times the true field area of any 1¼" 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 eyeguard for eyeglass wearers.
Review
A must for deep sky fans. This good low power/wide field eyepiece has the largest true field and largest exit pupil possible for 2" eyepiece holders-3 times the field area of any 1 l/4" eyepiece.
Performance with Schmidt Cassegrains is remarkable since it avoids the image degradations and severe vignetting which occurs when using tele compressors.
The long eye relief and unique adjustable eye guard allows eyeglass wearers to see the full field of view even with their glasses on.
The rubber grip gives sure grip and makes it comfortable to use in cold weather.
Specifications
| Focal Length (mm) | 55 |
| Barrel Size (in.) | 2" |
| Apparent Field of View (deg.) | 50 |
| Eye Relief (mm) | 38 |
| Weight (lb / oz) | 1.13 / 18.1 |
| Field Stop (mm) | 46 |
