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
Wider 58 Degree Field of View: Comfortable eye relief averaging 16 mm across the series and focal lengths is between 2.5 mm to 25 mm; giving maximum detail and definition across the entire 58 degree field of view
Multi-coated Lense Design: Each eyepiece has 5 lens elements in 3 groups; with retaining high transmittance and contrast ratio with least lateral cchromatic aberration and scattering phenomenon; having a wide view