A wide-field telescope for MACHO searching at Dome C

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

doi:10.1117/12.552057

28 September 2004 A wide-field telescope for MACHO searching at Dome C

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

Author Affiliations +

Proceedings Volume 5489, Ground-based Telescopes; (2004) https://doi.org/10.1117/12.552057
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

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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, and Elise Vernet "A wide-field telescope for MACHO searching at Dome C", Proc. SPIE 5489, Ground-based Telescopes, (28 September 2004); https://doi.org/10.1117/12.552057

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