1.25 (31.7mm). Apparent Field of View. 5-elements in 3 groups. 6-elements in 4 groups. 4-elements in 3 groups. Standard 1.25 Filter Thread. FMC 68-Degree Ultra Wide long eye Relief Eyepiece. Standard 1.25 Inch Astronomy Telescope 4 Piece Eyepiece Kit. Super Wide 68 Degree apparent field offers expansive views of the moon, star clusters, and the […]