THE SOLAR-IMAGE AQUISITION SYSTEM AT TOR-VERGATA-UNIVERSITY

We describe an image acquisition system realized as a part of an appar atus built in collaboration with the Arcetri Astrophysical Observatory in Florence designed to record high-spectral-resolution solar images in the visible part of the spectrum. The system is based on a 512 x 51 2 Thomson CCD type THX31159 and on a 486 CPU personal computer running under MS-DOS. The electronics for driving the sensor and for the ampl ification and conditioning of the video signal has been designed and b uilt in the laboratory while the signal A/D conversion and image prese ntation is performed using commercial boards.