Planewave Electronic Focus Accessory (EFA) Kit

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The EFA kit automates focusing on the optional Hedrick Focuser, or IRF90 rotating focuser. Monitors temperature (primary-mirror and OTA back-plate). Controls the fans built into CD K telescopes. Ensure you have the proper EFA kit selected for your telescope below. 125901-Kit is for all 12.5″ OTAs (CDK/ IRDK). 240901-Kit is for all 14-24″ OTAs (CDK/ IRDK/ RC) and CDK700s. *If the EFA is not purchased, the ability to automate temperature regulation for the primary mirror will be lost. This is especially significant when using a third-party focuser, as the EFA is required for full automation. Show more