TY - JOUR
T1 - METIS high-contrast imaging: design and expected performance
AU - Carlomagno, Brunella
AU - Delacroix, Christian
AU - Absil, Olivier
AU - Cantalloube, Faustine
AU - Orban de Xivry, Gilles
AU - Pathak, Prashant
AU - Agocs, Tibor
AU - Brandl, Bernhard
AU - Kenworthy, Matthew
PY - 2020
Y1 - 2020
N2 - With the advent of 30- to 40-m class ground-based telescopes in the mid-2020s, direct imaging of exoplanets is bound to take a new major leap. Among the approved projects, the Mid-infrared Extremely Large Telescope (ELT) Imager and Spectrograph (METIS) instrument for the ELT holds a prominent spot; by observing in the mid-infrared regime, it will be perfectly suited to study a variety of exoplanets and protoplanetary disks around nearby stars. Equipped with two of the most advanced coronagraphs, the vortex coronagraph and the apodizing phase plate, METIS will provide high-contrast imaging (HCI) in L-, M- and N-bands, and a combination of high-resolution spectroscopy and HCI in L- and M-bands. We present the expected HCI performance of the METIS instrument, considering realistic adaptive optics residuals, and investigate the effect of the main instrumental errors. The most important sources of degradation are identified and realistic sensitivity limits in terms of planet/star contrast are derived.
AB - With the advent of 30- to 40-m class ground-based telescopes in the mid-2020s, direct imaging of exoplanets is bound to take a new major leap. Among the approved projects, the Mid-infrared Extremely Large Telescope (ELT) Imager and Spectrograph (METIS) instrument for the ELT holds a prominent spot; by observing in the mid-infrared regime, it will be perfectly suited to study a variety of exoplanets and protoplanetary disks around nearby stars. Equipped with two of the most advanced coronagraphs, the vortex coronagraph and the apodizing phase plate, METIS will provide high-contrast imaging (HCI) in L-, M- and N-bands, and a combination of high-resolution spectroscopy and HCI in L- and M-bands. We present the expected HCI performance of the METIS instrument, considering realistic adaptive optics residuals, and investigate the effect of the main instrumental errors. The most important sources of degradation are identified and realistic sensitivity limits in terms of planet/star contrast are derived.
KW - adaptive optics
KW - coronagraphy
KW - end-to-end simulations
KW - exoplanets
KW - high-contrast imaging
UR - http://www.scopus.com/inward/record.url?scp=85092688439&partnerID=8YFLogxK
U2 - 10.1117/1.JATIS.6.3.035005
DO - 10.1117/1.JATIS.6.3.035005
M3 - Article
VL - 6
JO - Journal of Astronomical Telescopes, Instruments, and Systems
JF - Journal of Astronomical Telescopes, Instruments, and Systems
SN - 2329-4124
IS - 3
M1 - 035005
ER -