Free Access

Fig. 1


Schematic view of the TRIPPEL spectrograph as seen from above. Components from left to right: entrance slit, pick-off mirrors for ports A-C, field lens, Littrow doublet, grating. Spectral port A has a CCD camera with an interference filter.

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.