The Explore Scientific dark yellow filter Nr.15 1.25" is perfect for enhancing contrast during your observations of the Moon and Mars. On Jupiter, it accentuates the contrast differences between the cloud bands, allowing for the revelation of new fascinating details with each observation. This filter is recommended for telescopes with an aperture of at least 5", and with a telescope of 8" or more, it can even allow for the identification of objects on Saturn under good observing conditions. By reducing overexposure, it improves image clarity and enhances overall contrast, providing you with an optimal viewing experience.