GANS: a nighttime spectrograph for the GREGOR solar telescope

被引：0
|
作者：
Jaervinen, Arto S. [1 ]
Weber, M. [1 ]
Strassmeier, K. G. [1 ]
Granzer, T. [1 ]
Woche, M. [1 ]
Bauer, S. -M. [1 ]
Bittner, W. [1 ]
Weingrill, J. [1 ]
Sablowski, D. P. [1 ]
机构：
[1] Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany
来源：
GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII | 2018年 / 10702卷
关键词：
instruments; spectrographs; radial velocity; GANS; GREGOR;
D O I：
10.1117/12.2313185
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
GREGOR at night spectrograph (GANS) is a high-resolution thermally-stabilised vacuum-enclosed fixed-format fiber-fed Echelle spectrograph. GANS will be installed starting 2018 alongside the daytime instrumentation in the building of the 1,5m Gregor Solar Telescope at the Observatorio del Teide at Izana, Tenerife. Specified resolving power is R similar to 55k with wavelength coverage from 470 to 680 nm in single shot on 2k x 2k CCD with 3", 50 mu m fiber on sky, and with space between orders for simultaneous calibration light in the form of a Fabry-Perot Etalon or a Laser-comb spectrum. The end-to-end simulated radial velocity precision performance estimate is 2 ms(-1). The main observing project of GANS will be the ground-based follow-up survey of TESS and PLATO2.0 exoplanet candidates. GANS will observe its targets in autonomous operation without human intervention using the normally human-operated day-time observatory. Limited operations will begin in first half of 2019 with first science-light planned for summer 2019.
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页数：9
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