The filter set work by blocking certain frequencies of light and allowing others to pass. An Orange filter will block the blue and green and let Orange pass. Different coloured filters will allow different transmissions of light and consideration must be made to the aperture of the telescope for some filters. Our Filter set have been chosen to enhance you views of the planets that can show detail. We hope you enjoy your new filter set. #12 Yellow Contrasts strongly with blue-coloured features on Jupiter and Saturn, while enhancing red and orange features. Lightens red and orange features of Mars, while reducing or blocking the transmission, and thereby increasing the contrast, of blue-green areas. Useful in increasing the contrast of lunar features in telescopes 6″ aperture and larger. #21 Orange filter has 46% transmission, it will enhances lunar detail, darkens the Maria and lightens the orange deserts on Mars and also helps show off polar ice caps when visible. A good filter for Mars in 6” –16” telescopes. #56 Green filter has 53% transmission and is quite good on lunar surface detail, it can help locating GRS (Great Red Spot) on Jupiter, offer great contrast to Polar caps, low clouds and dust storms on Mars. #80A Blue filter has 30% transmission, it turns Saturn more Grey /Whitish and helps with the Cassini Division in larger telescopes, On Jupiter it enhances contrast between the bright areas and cloud boundaries and is also very good for the GRS. Worth having in your kit. Choosing Filters Fact Sheet
