The amplitude accuracies are better than 4 m s-1 and 2 K in most of the photosphere. The increase of the velocity oscillation amplitude toward higher photospheric layers has been confirmed and quantified. Its phase angle remains constant through the photosphere, and significant power is obtained in temperature. Maps of spectral quantities. In this paper we illustrate some of the capabilities of the Correlation Tracker prototype developed at the Instituto de Astrofisica de Canarias used for two-dimensional, high spatial resolution, solar spectroscopy.
Spectral information is obtained from several solar regions of different sizes.
Several sub-arcsecond structures are undoubtedly distinguished as well. The two-dimensional variation of several spectral quantities in the solar atmosphere is shown, demonstrating the power of this technique and its future possibilities. I. Correlation tracker description. In this paper the description of the Solar Correlation Tracker prototype built by the Instituto de Astrof isica de Canarias is presented. The behaviour of the different elements of the tracker is shown, as well as their influence in the performance of the system.