Tele Vue Radian 18mm Wide Angle Eyepiece (1.25") (Pre-owned) Sloan Filters 7x Reducer features a custom

7x Reducer features a custom 5 element optical design engineered to maintain the flat-field performance of our award winning EdgeHD optical system

0046e-/p/s @ -10℃ Exposure Time Range 40us – 3600sec Unity Gain* 25 (PH Mode

7x - EdgeHD 1400 Features

UHC Filter:  An Ultra High Contrast

The prime focus focal plane is located near the front aperture of the optical system

Tele Vue Radian 18mm Wide Angle Eyepiece (1.25") (Pre-owned) Sloan Filters 7x Reducer features a customUsed eyepiece in excellent condition. The Radian 18. 0mm eyepiece, for many, is the ideal compromise. It has 20mm of eye relief and an apparent field of view of 60, while not being too heavy. Wide, comfy and relatively light! All glass surfaces are multicoated Blackened lens edges enhance contrast Fold down rubber eyecup Accept standard 1. 25" astronomy eyepiece filters Tele Vue ERD 18. 0 Specs Focal Length 18. 0mm Eye Relief 20. 0mm Apparent Field of