Journal ArticleBroadband Stability of the Habitable Zone Planet Finder Fabry–Pérot Etalon Calibration System: Evidence for Chromatic VariationTerrien, Ryan C.; Ninan, Joe P.; Diddams, Scott A.; Mahadevan, Suvrath; Halverson, Samuel; Bender, Chad; Fredrick, Connor; Hearty, Fred; Jennings, Jeff; Metcalf, Andrew J.; Monson, Andrew; Roy, Arpita; Schwab, Christian; Stefánsson, Guđmundurnull2021-05-0510269814The Astronomical Journal16162520004-6256https://doi.org/10.3847/1538-3881/abef682009889; 2009955National Science Foundation