Recent work on sprite spectrum in Taiwan

This paper reports the recent development of spectroimagers for sprite campaigns in Taiwan. First, we introduce two types of spectroimagers, the slit and slitless type, and discuss their advantages and shortcomings. Next, we explore the instrument development and procedures undertaken for this study. In 2006, a slit spectroimager was installed for a sprite campaign, and on August 15 of that year, two sprite spectra were recorded by the slit spectroimager along with seven sprites, one halo, one ELVES emission, and two jets. By the end of 2015, a slitless spectroimager had been successfully constructed and was ready to conduct additional investigations; on May 7, 2016, a sprite spectrum was recorded by the slitless spectroimager. Following an examination of the calibrations (comprising detection region field of view, wavelength calibration, and response curve), data analysis, and additional calibrations (comprising elevation and azimuthal angles, atmospheric transmittance, and theoretical wavelength calculations) performed in this study, we present the results of our observed sprite spectra by the slit and slitless spectroimager.