The Airborne Infrared Spectrometer (AIR-Spec) took measurements of five infrared coronal emission lines from on board a NSF/NCAR airplane during the solar eclipse in August 2017. An open-loop image stabilization system was implemented using a gyroscope and fast steering mirror; 90% of the 60 millisecond exposures had an RMS jitter below 4.6 arcseconds. To increase the exposure time to 1 second, a closed-loop system is proposed using a proportional-integral-derivative (PID) controller and an image cross-correlation algorithm. We predict that 100% of 1 second exposures will have an RMS jitter below 4.6 arcseconds. A detailed analysis of the proposed closed-loop stabilization system is presented.

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Alisha Vira, Jenna Samra, Peter Cheimets, Edward DeLuca, Samuel Fedeler, Giora Guth, and Vanessa Marquez, "Image stabilization for Airborne Infrared Spectrometer," Proc. SPIE 10765, Infrared Remote Sensing and Instrumentation XXVI, 107650J (Presented at SPIE Optical Engineering + Applications: August 21, 2018; Published: 10 October 2018); https://doi.org/10.1117/12.2319890.