Celestron Aluminum Dew Shield And Cap 8in Black

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