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Proceedings Paper

A wide-field telescope for MACHO searching at Dome C
Author(s): Roberto Ragazzoni; Giuseppe Bono; Piero Salinari; Carmelo Arcidiacono; Maurizio Busso; Emiliano Diolaiti; Jacopo Farinato; Anna Moore; Armando Riccardi; Marco Roncatelli; Giorgio Sartori; Roberto Soci; Gino Tosti; Elise Vernet
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Paper Abstract

Wide-Field imaging at visible wavelengths with seeing of the order of 0.1-0.2arcsec is believed to be possible from the high Antarctic plateau site of Dome-C by the removal of ground layer effects only. We present a proposal for a 2m-class telescope specifically designed for the science case of short duration (~10s or greater) microlensing events in the crowded central regions of Galactic Globular Clusters and nearby galaxies where the achievement of a spatial resolution of the order of a fraction of arcsec is essential. The philosophy behind the telescope proposal is discussed in detail. It is emphasized that this is a project with a specific unique science goal in mind and not a large scale facility instrument. A preliminary design for the optics, ground layer removal using a deformable secondary and "static" wavefront sensor and telescope structure is presented. In particular, it is shown that substantial simplification in the design can be achieved by having a specific science goal in mind, so reducing the complexity and increasing reliability. Transport and logistics for the successful deployment and operation of the telescope at the Dome-C site are discussed.

Paper Details

Date Published: 28 September 2004
PDF: 10 pages
Proc. SPIE 5489, Ground-based Telescopes, (28 September 2004); doi: 10.1117/12.552057
Show Author Affiliations
Roberto Ragazzoni, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Max-Planck-Institut fur Astronomie (Germany)
Giuseppe Bono, INAF, Osservatorio Astronomico di Roma (Italy)
Piero Salinari, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Carmelo Arcidiacono, Univ. degli Studi di Firenze (Italy)
Maurizio Busso, Univ. degli Studi di Perugia (Italy)
Emiliano Diolaiti, INAF, Osservatorio Astronomico di Bologna (Italy)
Jacopo Farinato, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Anna Moore, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Armando Riccardi, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Marco Roncatelli, INFN (Italy)
Giorgio Sartori, INFN (Italy)
Roberto Soci, Max-Planck-Institut fur Astronomie (Germany)
Gino Tosti, Univ. degli Studi di Perugia (Italy)
Elise Vernet, INAF, Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 5489:
Ground-based Telescopes
Jacobus M. Oschmann, Editor(s)

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