Metal filter cell threads directly into the 1.25- inch barrel of your telescope eyepiece
Metal filter cell threads directly into the 1.25- inch barrel of your telescope eyepiece This ND96 neutral density filter allows 13 percent of the visible light to pass through
Perfectly neutral color will not alter the natural color of the Moon
Fully Multi-coated: Astromania 17mm Super Plossl eyepiece is engineered with 2 sets of 5 element design with fully multi-coated; the high-quality optics that minimize internal reflections and improve contrast
52 Degree Field Of View: The eyepiece have a wider 52 degree field of view than most eyepieces with a 17mm focal length and 13mm eye relief to see more detail; You can choose eyepiece with the right focal length for your telescope model which are parfocal