Celestron Dew Shield For 8" & 6" SCT Telescopes Features: - Protect your corrector lens from moisture and block excess light with the lens shade - Dual Velcro strip adjust the shade to fit either a C6 or C8 optical tube A dew shield is an essential accessory that protects your optical tube from excess moisture forming condensation on the corrector lens. A lens shade also helps block out stray light outside the path of the telescope for better viewing and astroimaging. This versatile dew shield can accommodate both 6" and 8" Schmidt-Cassegrain optical tubes. Choose the outer Velcro strip for larger tubes and the inner strip for smaller tubes to customize your fit. Also compatible with the 8" EdgeHD optical tube. What's in the box 1 X Celestron Dew Shield