Are you an astronomy enthusiast or a professional astroimager seeking a reliable solution to protect your telescope tube in the field The Celestron 8"" Aluminum Dew Shield with Cover Cap is a high-quality, durable accessory designed specifically for your needs. This effective dew shield significantly reduces radiative cooling of the Schmidt corrector lens, keeping it below the dew point for longer periods. This prevents dew formation on the lens, ensuring clear, unobstructed viewing and astroimaging.The Celestron Aluminum Dew Shield is not just a protective accessory it also enhances your viewing experience by increasing image contrast. It achieves this by blocking stray light from entering the telescope, providing you with better, more detailed images. This makes it an ideal accessory for use with your 8"" EdgeHD, Rasa, or Schmidt Cassegrain (manufactured after 2006) telescope tube.