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Paper: The Stellar Observations Network Group—the Prototype
Volume: 416, Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21
Page: 579
Authors: Grundahl, F.; Christensen-Dalsgaard, J.; Kjeldsen, H.; Jørgensen, U. G.; Arentoft, T.; Frandsen, S.; Kjærgaard, P.
Abstract: The Stellar Observations Network Group (SONG) has obtained full funding for the design, construction and implementation of a prototype telescope and instrumentation package for the first network node. We describe the layout of such a node and its instrumentation and expected performance for radial-velocity measurements. The instrumentation consists of a 1m telescope, equipped with two cameras for photometry of microlensing events with the lucky-imaging technique and a high-resolution spectrograph equipped with an iodine cell for obtaining high-precision radial velocities of solar-like stars, in order to do asteroseismology. The telescope will be located in a dome of ∼ 4.5 m diameter, with two lucky-imaging cameras at one of the Nasmyth foci and the spectrograph and instrument control computers at a Coudé focus, located in an adjacent container. Currently the prototype telescope and instrumentation is undergoing detailed design. Installation at the first site (Tenerife) is expected during mid– late 2010, followed by extensive testing during 2011.
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