Lumicon Color 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.
Clear aperture = 43.75mm (1.72"); Weight = 0.5oz.; Filters feature standard male and female 2" astronomy filter threads (M48x0.75) on either side and can be stacked; Total length of filter cell (including threads) = 10mm (0.39")
#47 Violet Filter Applications:
- Venus: Clouds
- Mars: Polar Caps
- Saturn: Rings
Manufacturer part number: LF2055
Agena Informational Article: Choosing a Color / Planetary Filter