The LF1110, 1.25" Polarizing Filter, is the best all-purpose lunar and planetary filter. Cuts glare and increases contrast on the moon and planets. In addition to polarizing the light, the Lumicon Polarizing Filter reduce its intensity by a factor of about 3. May be double-stacked with Lumicon color filters for use on bright planets. Also useful for daylight observation of land, sea and nature. Fits 1.25" eyepieces. The Lumicon Polarizing Filters are made from renowned Schott- 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.