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Proceedings Paper

A new 30 cm three-reflection telescope for wide-field Astronomy on the Antarctic Plateau
Author(s): Domenico Nanni; Roberto F Viotti; M. Badiali; Andrea M. Di Lellis; Marc Ferrari
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Paper Abstract

We describe a new three-reflection telescope (TRT) prototype, where the 30-cm primary mirror is acting as the first and the third reflecting surfaces with different figurings. The two surfaces were realized and polished separately, and then accurately aligned and glued together. This technique has added more flexibility to the original design. The telescope provides: wide (2°x2° square degrees) corrected and unvignetted field of view, flat-field focal surface, small encumbrance, and easy access to the focal plane instrumentation. These characteristics make the TRT in combination with large area CCD cameras, a useful instrument for wide-field observations from remote and hostile ground sites, such as the Antarctic Plateau. The prototype has been equipped with a 2kx2k thermoelectric cooled CCD camera using the San Diego State University SDSU controller. A second custom controller prototype has been developed for ongoing space and Antarctica applications, characterized by synchronous fast readout capabilities (two 14-bit channels each sampled at 3.3 Msamples/s) and suitable to be scaled to large array mosaic applications. This project is aimed at the discovery and tracking of potentially hazardous NEOs, and identification of transient events such as GRBs.

Paper Details

Date Published: 16 December 2002
PDF: 11 pages
Proc. SPIE 4835, Future Research Direction and Visions for Astronomy, (16 December 2002); doi: 10.1117/12.456704
Show Author Affiliations
Domenico Nanni, Osservatorio Astronomico di Roma (Italy)
Roberto F Viotti, Istituto di Astrofisica Spaziale del CNR (Italy)
M. Badiali, Istituto di Astrofisica Spaziale del CNR (Italy)
Andrea M. Di Lellis, AMDL srl (Italy)
Marc Ferrari, Observatoire Astronomique de Marseille-Provence (France)

Published in SPIE Proceedings Vol. 4835:
Future Research Direction and Visions for Astronomy
Alan M. Dressler, Editor(s)

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