High-resolution solar spectroscopy with TESOS - Upgrade from a double to a triple system

Details High-resolution solar spectroscopy with TESOS - Upgrade from a double to a triple system High-resolution solar spectroscopy with TESOS - Upgrade from a double to a triple system

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..211...17t&link_type=abstract

Solar Physics, v. 211, Issue 1, p. 17-29 (2002).

Physics

25

Scientific paper

We present the characteristics and demonstrate the performance of the Triple Etalon SOlar Spectrometer (TESOS) operated at the German Vacuum Tower Telescope (VTT) on Tenerife. The Fabry-Pérot interferometer TESOS is ideally suited for precise measurements of photospheric and chromospheric motion. Installed in 1997 and equipped with two etalons, TESOS has recently been completed with a third etalon and upgraded with two high-speed, backside-illuminated CCD cameras. The image scale of 0.089 arc sec pixel-1 is adapted to the resolution of the telescope. The improved system enables frame rates up to 5 frames per second. The spectral resolution of 300000 allows for spectral diagnostics of weak photospheric lines, including individual CH-lines within the G-band at 430.6 nm.

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