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The James Webb Space Telescope (JWST) will revolutionize the field ofhigh-contrast imaging and enable both the direct detection of Saturn-massplanets and the characterization of substellar companions in the mid-infrared.While JWST will feature unprecedented sensitivity, angular resolution will bethe key factor when competing with ground-based telescopes. Here, we aim tocharacterize the performance of several extreme angular resolution imagingtechniques available with JWST in the 3-5 micron regime based on data takenduring commissioning. Firstly, we introduce custom tools to simulate, reduce,and analyze NIRCam and MIRI coronagraphy data and use these tools to extractcompanion detection limits from on-sky NIRCam round and bar mask coronagraphyobservations. Secondly, we present on-sky NIRISS aperture maskinginterferometry (AMI) and kernel phase imaging (KPI) observations from which weextract companion detection limits using the publicly available fouriever tool.Scaled to a total integration time of one hour and a target of the brightnessof AB Dor, we find that NIRISS AMI and KPI reach contrasts of $\sim$7-8 mag at$\sim$70 mas and $\sim$9 mag at $\sim$200 mas. Beyond $\sim$250 mas, NIRCamcoronagraphy reaches deeper contrasts of $\sim$13 mag at $\sim$500 mas and$\sim$15 mag at $\sim$2 arcsec. While the bar mask performs $\sim$1 mag betterthan the round mask at small angular separations $\lesssim$0.75 arcsec, it isthe other way around at large angular separations $\gtrsim$1.5 arcsec.Moreover, the round mask gives access to the full 360 deg field-of-view whichis beneficial for the search of new companions. We conclude that already duringthe instrument commissioning, JWST high-contrast imaging in the L- and M-bandsperforms close to its predicted limits.

Performance of near-infrared high-contrast imaging methods with JWST from commissioning