Proxy magnetometry with the Dutch Open Telescope

Abstract

Superb movies from the Dutch Open Telescope (DOT) on La Palma have proven the validity of the open concept of this innovative telescope for high-resolution imaging of the solar atmosphere. A five- camera speckle-burst registration system is being installed that should permit consistent and synchronous speckle reconstruction at multiple wavelengths including the G band, Ca II K and Ha, and provide tomo- graphic high-resolution imaging of the magnetic topology of the solar atmosphere up to the transition region. Other plans include use of a birefringent Ba II 4554 filter built at Irkutsk. However, the DOT funding remains insecure.