High spectral resolution test and calibration of an ultra-narrowband Faraday anomalous dispersion optical filter for use in daytime mesospheric resonance Doppler lidar

► We show the design and function of a system to calibrate a high-spectral resolution optical filter for atmospheric optics. ► We describe the processing procedure from determining the filter bandpass to processing atmospheric data to extract Doppler information. ► We demonstrate the initial use of the filter for mesospheric lidar studies under daylight conditions.