Sections (1365 pix × 925 pix) of VIS arm calibration frames used by the data reduction pipeline to fully characterize the spectral format. From left to right: a single pinhole arc frame (“format check”), a single pinhole continuum frame (“order definition”) and a 9-pinhole arc frame used for spatial scale and wavelength calibration.
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.
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