AstroZap Flexi-Heat Dew Shield For Meade 7" Mak and 8" Sct. Telescopes AZ807-M Fits Celestron CPC 800, Meade LX90 and LX200 Does not fit Celestron NexStar 8SE, AVX 8 SCT, AVX 8HD, CGEM II, or CGX scopes Requires separate dew heater controller and 12 volt DC power source Compatible controllers include Astozap AZ720 and Thousand Oaks DDHC