First on-sky results of ERIS at VLT
Kateryna Kravchenko, Yigit Dallilar, Olivier Absil, Alex Agudo Berbel,, Andrea Baruffolo, Markus J. Bonse, Alexander Buron, Yixian Cao, Angela, Cortes, Felix Dannert, Richard Davies, Robert J. De Rosa, Matthias, Deysenroth, David S. Doelman, Frank Eisenhauer, Simone Esposito
TL;DR
ERIS is a new adaptive optics instrument at VLT providing high-resolution near-infrared imaging and spectroscopy, with initial on-sky performance results demonstrating its capabilities during commissioning.
Contribution
This paper presents the first on-sky results and performance assessment of ERIS, a new adaptive optics instrument at the VLT, during its commissioning phase.
Findings
Successful initial on-sky performance verification
Effective adaptive optics correction with LGS and NGS
Potential for advanced near-infrared observations
Abstract
ERIS (Enhanced Resolution Imager and Spectrograph) is a new adaptive optics instrument installed at the Cassegrain focus of the VLT-UT4 telescope at the Paranal Observatory in Chile. ERIS consists of two near-infrared instruments: SPIFFIER, an integral field unit (IFU) spectrograph covering J to K bands, and NIX, an imager covering J to M bands. ERIS has an adaptive optics system able to work with both LGS and NGS. The Assembly Integration Verification (AIV) phase of ERIS at the Paranal Observatory was carried out starting in December 2021, followed by several commissioning runs in 2022. This contribution will describe the first preliminary results of the on-sky performance of ERIS during its commissioning and the future perspectives based on the preliminary scientific results.
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