Astro-Smart's high efficiency Dew Heater Annihilator Controllers offer trouble free operation for use with any telescope. From low cost to high end controllers for observatories, Astro-Smart has the Annihilator Controller for you. 888.291.6577 Located in Saint Augustine, FL 32095 By faith we understand that the universe was created by God's command, so that what is seen has been made from things that are not visible Copyright (R) 2019 SmartAstronomy, All rights reserved.