On-sky tests quantify additional throughput loss, background elevation, fast sky variability, and a derotator-induced background pattern that all limit NIRC2 high-contrast imaging at 3-5 microns.
Planet search with the Keck/NIRC2 vortex coronagraph in the M s band for Vega,
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An on-sky investigation into factors limiting the performance of Keck-NIRC2 for conducting infrared high-contrast imaging
On-sky tests quantify additional throughput loss, background elevation, fast sky variability, and a derotator-induced background pattern that all limit NIRC2 high-contrast imaging at 3-5 microns.