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.
A Wolf 359 in Sheep’s Clothing: Hunting for Substellar Companions in the Fifth-closest System Using Combined High-contrast Imaging and Radial Velocity Analysis,
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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.