#23A Light Red- The red filters are made from renowned Schott and Hoya optical glass and allow for maximum contrast on viewing planetary and lunar detail; #12 Yellow - The yellow filter improves contrast on Moon craters; on Mars; channels and polar caps become more apparent
#56 Light green - The light green filter is ideal for observing the ice caps on Mars and the yellowish sand storms on the Martian surface; it also improves the contrast of reddish and bluish structures in Jupiter's atmosphere
Variable Grey Polarizing Filter - The variable polarizing filter allows for selective adjustment of brightness; which is useful for terrestrial observation; light transmission of polarizing filters is between 1% and 40%
Enhances the contrast of the moon and planets in photographic images
A specialty Moon filter especially useful for increasing contrast during waning and waxing crescent phases