The LF2085, 2" Neutral Density 25 Filter (ND25), transmits 25% of all incident light, while blocking 75%. For lunar and planetary observing with 5" (125mm) and larger telescopes. Lumicon Neutral Density Filters are made from renowned Schott and Hoya optical glass and allow for maximum contrast on viewing planetary and lunar detail. Individually precision ground, highly polished with maximum light transmission coatings on both sides, these filters are 100% guaranteed for life.
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