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Ideal for viewing bright objects in the nighttime sky, this Neutral Density 0.9 Filter from Explore Scientific is compatible with telescopes featuring a 2" eyepiece. This solid ND 0.9 filter transmits 13% of light across the UV, IR, and visible spectra, and cuts down on visible glare, without affecting color fidelity. It is particularly well-suited for observing or photographing the Moon with any telescope 4" or larger, and can also be used for splitting close double stars where one of the binary pair far exceeds the other in brightness.
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