干旱区生态环境知识资源中心(Arid): Single conjugate adaptive optics for the ELT instrument METIS

Arid

DOI	10.1007/s10686-018-9609-y
	Single conjugate adaptive optics for the ELT instrument METIS
	Hippler, Stefan 1; Feldt, Markus 1; Bertram, Thomas 1; Brandner, Wolfgang 1; Cantalloube, Faustine 1; Carlomagno, Brunella 2; Absil, Olivier 2; Obereder, Andreas 3; Shatokhina, Iuliia 4; Stuik, Remko 5
通讯作者	Hippler, Stefan
来源期刊	EXPERIMENTAL ASTRONOMY
ISSN	0922-6435
EISSN	1572-9508
出版年	2019
卷号	47 期号:1-2 页码:65-105
英文摘要	The European Extremely Large Telescope (ELT) is a 39m large, ground-based optical and near- to mid-infrared telescope under construction in the Chilean Atacama desert. Operation is planned to start around the middle of the next decade. All first light instruments will come with wavefront sensing devices that allow control of the ELT's intrinsic M4 and M5 wavefront correction units, thus building an adaptive optics (AO) system. To take advantage of the ELT's optical performance, full diffraction-limited operation is required and only a high performance AO system can deliver this. Further technically challenging requirements for the AO come from the exoplanet research field, where the task to resolve the very small angular separations between host star and planet, has also to take into account the high-contrast ratio between the two objects. We present in detail the results of our simulations and their impact on high-contrast imaging in order to find the optimal wavefront sensing device for the METIS instrument. METIS is the mid-infrared imager and spectrograph for the ELT with specialised high-contrast, coronagraphic imaging capabilities, whose performance strongly depends on the AO residual wavefront errors. We examined the sky and target sample coverage of a generic wavefront sensor in two spectral regimes, visible and near-infrared, to pre-select the spectral range for the more detailed wavefront sensor type analysis. We find that the near-infrared regime is the most suitable for METIS. We then analysed the performance of Shack-Hartmann and pyramid wavefront sensors under realistic conditions at the ELT, did a balancing with our scientific requirements, and concluded that a pyramid wavefront sensor is the best choice for METIS. For this choice we additionally examined the impact of non-common path aberrations, of vibrations, and the long-term stability of the SCAO system including high-contrast imaging performance.
英文关键词	Single conjugate adaptive optics SCAO ELT Pyramid wavefront sensor Shack-Hartmann wavefront sensor Fragmented pupil Low wind effect Non-common path aberrations High-contrast imaging
类型	Article
语种	英语
国家	Germany ; Belgium ; Austria ; Netherlands
开放获取类型	Green Submitted, Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000468983500003
WOS关键词	WAVE-FRONT RECONSTRUCTION ; SIMULATION
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215615
作者单位	1.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany; 2.Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, 19C Allee Six Aout, B-4000 Liege, Belgium; 3.MathConsult GmbH, Altenbergerstr 69, A-4040 Linz, Austria; 4.Johannes Kepler Univ Linz, Ind Math Inst, Altenbergerstr 69, A-4040 Linz, Austria; 5.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
推荐引用方式 GB/T 7714	Hippler, Stefan,Feldt, Markus,Bertram, Thomas,et al. Single conjugate adaptive optics for the ELT instrument METIS[J],2019,47(1-2):65-105.
APA	Hippler, Stefan.,Feldt, Markus.,Bertram, Thomas.,Brandner, Wolfgang.,Cantalloube, Faustine.,...&Stuik, Remko.(2019).Single conjugate adaptive optics for the ELT instrument METIS.EXPERIMENTAL ASTRONOMY,47(1-2),65-105.
MLA	Hippler, Stefan,et al."Single conjugate adaptive optics for the ELT instrument METIS".EXPERIMENTAL ASTRONOMY 47.1-2(2019):65-105.