Check the listing for details. ZWO Seestar S50 Smart Telescope Dew Shield. Condition: New. Listed at 12.93 USD. The Dew Shield is a high-quality accessory for astronomers and astrophotographers. It is made of durable and lightweight PLA matte material that provides reduced reflective properties, which will decrease stray light reflections. This accessory is compatible with the ZWO Seestar S50 Smart Telescope. The ZWO Seestar S50 Smart Telescope Dew Shield features great benefits such as stray light reduction. It fits the telescope well, being neither too tight (allowing easy removal) nor too loose (to prevent it from falling off). The dew shield length is 68mm.IMPORTANT NOTE: Please make sure you don't use the 'Shut down' feature on your Seestar S50 while the accessories are attached. Also, ensure the 'Auto shutdown' feature (My Seestar/Advanced Feature/Auto Shut Down) on your Seestar S50 is turned off while using the accessories to prevent accidental jamming.