Datasets collected for the development and performance testing of a low-cost instrument for fast-synchronized spatial measurements of light spectra (FROST). Figure references correspond with the Figures as published in AMT, Heusinkveld et al., 2023. Of special interest are the spectral measurements (ASD Fieldspec) of 11 March and 15 May 2022 at Wageningen Weather station Veenkampen, The Netherlands and the experimental data collected with the light spectroscopy sensor made by AMS, Austria: type: AS7265x including its spectral response data. Light diffusing PTFE and Acrylic glass filters light spectral data are also included. Reference: Heusinkveld, B.G., Mol, W.B., van Heerwaarden, C.: A new accurate low-cost instrument for fast synchronized spatial measurements of light spectra, 2023.