Neutral density filters are excellent filters to reduce the overall brightness of an image to cut down glare while viewing bright astronomical objects through a telescope
These three ND moon filters are useful for splitting binary systems; comfortably observing the moon; or stacking with other planetary filters
ND filters retain true color balance of the objects being observed since all wavelengths are transmitted uniformly over the entire spectrum
Fully-Multicoated Achromatic Design: Featuring a 4-element Plossl optical design with an approximate 50-degree AFOV, perfect for broad field lunar observations; medium sized star clusters; provide a wide range of cloudy nebulas and deep sky targets
Wide Field of View : 1.25 Inch 4mm 10 mm 20 mm Plossl eyepiece offers a wide field of view and long eye relief ideal for high-precision astronomical observations