The Moon filter greatly increases contrast when observing the Moon. Harsh moonlight is softened so that structures can be more easily identified. This can also provide better separation of components when observing binary stars if they have considerably different magnitudes.
Filter #8 (light yellow): This filter is used for observing dust clouds on Mars, details of Jupiter's atmosphere, Uranus, Neptune and the Moon. You can also use it for observing comets. It is characterised by high light transmission, making it suitable for telescopes with small apertures. In refracting telescopes, it reduces chromatic aberration.
Filter #11 (yellow-green): This filter with high light transmission can also be used on telescopes with small apertures. This filter allows good observation of Saturn, especially the Cassini division, as well as Mars and Jupiter. In refracting telescopes, it minimises chromatic aberration.
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.
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 #25 red: The filter has a positive effect on the contrast of the image and is recommended for observing Mars, Jupiter and Saturn. It is characterised by low light transmission, so it is only effective with telescopes with an aperture of 150 mm or more. With this filter, you can see the polar caps, dust clouds and seas on Mars, as well as the blue clouds of Saturn and Jupiter in detail.
Filter #56A (light green): This filter is extremely useful for observing Jupiter. It highlights the details of the Great Red Spot and many subtle atmospheric formations that are barely visible. It can be used for observing Saturn and Venus. The filter is useful for observing the Moon. It is compatible with small-aperture telescopes and partially eliminates chromatic aberrations in refracting telescopes.
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.
