Open Access

Fig. 6.


Solar irradiance above the atmosphere in W m−2 nm−1 as a function of wavelength in nm. The blue curve is the FTS high resolution solar spectrum near Hα, Kurucz et al. (1984), which we use to calibrate the images taken with l1 (λ = 656.28 nm; Δλ = 50 pm). The red curve is shown for comparison. It is a calibrated solar spectrum taken at the ISS by Meftah et al. (2018). The gray zone around the red curve represents the area covered by its error bars. The wavelength axes of these two curves have been adjusted to each other. The superposition of the red and blue curves indicates a good agreement between data from the International Space Station and our calibration of the high resolution spectrum.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.