Fig. 22
Download original image
Spectra from the CALSPEC star HD111980 acquired during the night of 2017 May 30 at CTIO, which was assumed to be photometric, with the blazed Thorlabs grating with 300 lines mm−1 (top) and an amplitude hologram with 350 lines mm−1 (bottom). The curves are coloured according to the acquisition airmass z. In the amplitude hologram, a field star creates a spike around 530 nm.
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.