Fig. 1.
SPHERE/IRDIS and NACO observations of the ET Cha system. The companion is well-resolved in the 2019 SPHERE epoch. We note that we show the primary star on a slightly saturated color scale in order to highlight the companion (the data is not saturated). In the 2003 NACO epoch the companion is close to the resolution limit of the instrument and shows as a strong asymmetrical extension to the primary star PSF. We have performed a high-pass filter to make the companion more clearly visible. We mark the companion position in the NACO image by two white bars.
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