Celestron Aluminum Dew Shield And Cap 8in Black. The dew shield reduces radiative cooling of the Schmidt corrector lens to the night sky keeping the lens below the dew point longer and preventing dew from forming on the lens. The Aluminum Dew Shield also increases image contrast by blocking stray light from entering the telescope for better viewing and astroimaging. Construction The Aluminum Dew Shield provides a perfect custom fit for Celestron telescope tubes. The exterior of the dew shield is a rigid aluminum cylinder that will not fold flex or deform. Inside a velvet-lined interior absorbs any additional stray light and excess moisture creating optimal contrast when viewing and imaging. Attach the dew shield to your telescope tube with the two adjustable clips to ensure a snug fit. Weve also constructed the cover cap from durable yet lightweight aluminum. When your telescope is not in use place the cover cap on your dew shield to protect your Schmidt corrector from stray dust particles. The cover cap also offers you the ability to quickly and easily acquire dark frames for imaging. If youre an astroimager who enjoys using your Schmidt-Cassegrain in the Fastar/Hyperstar configuration youre probably used to running cables out the front of the dew shield. Simplify and streamline your setup with the Aluminum Dew Shields integrated cable management slot at the base. This slot gives you an easy way to corral essential cables (like the ones for our Dew Heater rings) without potentially allowing light pollution to leak in. Also there are cutouts to accommodate dovetail rails on the top and bottom of the telescope tube ensuring a good fit regardless of the configuration. Enhance your setup When purchasing this item you will receive 2x adhesive Celestron logo labels. Use them on your dew shield or anywhere else you like Specifications for Celestron Aluminum Dew Shield And Cap: Manufacturer: Celestron Condition: New Color: Black Quantity: 1 Features of Celestron Aluminum Dew Shield And Cap Helps prevent dew formation on the Schmidt corrector lens Prevents off-axis glare from entering the optical system Rigid body with a velvet-lined interior surface to reduce stray light Two adjustable clips for easy installation and disassembly Cable management at the base of the shieldperfect for using the Fastar/Hyperstar configuration or using in conjunction with the Celestron Dew Heater Rings An included cover cap keeps your telescope free from dust when not in use Package Contents: Celestron Aluminum Dew Shield And Cap Cover Cap Celestron 94021: Aluminum Dew Shield And Cap 8in Black