The Tracking System of the MAGIC Telescope

Details The Tracking System of the MAGIC Telescope The Tracking System of the MAGIC Telescope

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....5.2943b&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

6

Scientific paper

For the MAGIC telescope, with its weight of 60 tons and moment of inertia of around 3000 · t · m2 , a pointing and tracking system has been commissioned. The telescope can perform very fast slews with angular velocities of 180°/20s about the altitude axis and 180°/30s about the azimuth axis. Tracking velocities of much less than one revolution per day can be achieved without an indexing gear. Applying a bending correction algorithm, tracking can be done with a precision better than 1.5 armin given by half the pixel diameter of the MAGIC camera using 14-bit shaft enco ders. For higher precision and cross checks, a starguiding system is currently being tested. The starguider measures the pointing position from constantly looping over the differences between stellar positions determined by a CCD image and those recorded in standard star catalogues. Preliminary analysis of a camera oscillation monitor with 0.4 arcmin resolution shows stable mechanical behaviour of the PMT camera.

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