The orange filter Nr.21 1.25" from Explore Scientific enhances your planetary observations by increasing the contrast of details on Mars, Saturn, and Jupiter. It facilitates the distinction of dark areas on Mars while providing better visibility of cloud bands on Saturn and Jupiter. By blocking some of the light, this filter prevents any risk of overexposure while making the image more contrasted to reveal the most subtle details. Ideal for telescopes with an aperture of 10" or more.