Fits 231mm dia. Optical tubes One notch for side bar. The Astrozap FlexiHeat Dew Shield uniquely combines both active and passive methods of dew fighting with the added feature of shielding the telescope from undesirable stray light. Each FlexiHeat Dew Shield has a built-in Astrozap Dew Heater Strap. When used with the Astrozap AZ-720 Dual Channel Dew Controller or the AZ-719 DC Adapter, the FlexiHeat Dew Shield performs both active and passive dew fighting methods to keep the telescope objective dew-free, thereby lengthening precious telescope time. Fully compatible with other brand dew controllers.
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