Filter #23A (light red): This filter is useful for observing Mars, Saturn and Jupiter. Other applications include observing Venus during the day and Mercury at dusk. The filter also increases the brightness of comet tails. The filter has low light transmission and is recommended for telescopes with an aperture of 130 mm or more.
Filter #58 (green): This filter is well suited for telescopes with an aperture of 130 mm or more. When used on refracting telescopes, it effectively eliminates chromatic aberration and increases image resolution. It is recommended for observing Mars, the polar regions of Saturn and Jupiter's atmosphere, as well as the Moon and bright comets.
Filter #80A (blue): This is one of the most popular filters for planetary observation. It is indispensable for studying the Great Red Spot on Jupiter and the details of Saturn's rings. It is also well suited for studying the atmosphere and polar caps of Mars. It is also helpful for observing Venus and Mercury. This filter can also be used for observing double stars, comets and the moon.
Filter #12 (yellow): This filter is characterised by high light transmission, so that it can also be used on telescopes with a small aperture. It is one of the most popular filters for observing Mars. It is well suited for observing Jupiter and Saturn. This filter can also be used for observing comet tails and the surface of the moon.
