The assembly of the DOT and its initial installation on La Palma were funded by the Dutch Technology Foundation STW for the sake of the innovative DOT technology. Other campaigns followed, also using Ca II H and Halpha filters in actual DOT observing runs as tests of the pertinent optics designs. The hardware is being constructed by the Utrecht instrumentation group IGF under J. Verkerk. The G-band channel is ready and mounted on the telescope.
More information is given in a pdf document with detailed specification .
The resulting movie is also available in the DOT data base . Installation of this filter on the DOT is now planned as extension to the multi-wavelength system. This is an ESMN activity in wich the MOF will be supplied by the Osservatorio Astronomico di Capodimonte at Naples. It will consist of potassium vapour resonance cells in which magneto-optic Faraday rotation of the polarization serves to produce Dopplergrams and longitudinal magnetograms with very high angular resolution. The science prospects of the DOT are excellent, but its future is far less rosy with respect to funding.