Free Access

Fig. A.4


RINGO3 data of the standard zero-polarised star G191B2B and the unpolarised field star H. Top, middle, and bottom panels: results in the blue, green, and red bands, respectively. We depict the observing dates (vertical dotted lines) and when hardware updates occurred (vertical solid lines), as well as the Stokes parameters for G191B2B (filled circles and squares) and H (filled stars). The horizontal dashed lines represent average parameters of G191B2B (these would be equal to zero for an ideal instrument), and the horizontal dotted lines are the instrumental polarisation offsets reported in Jermak (2016).

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.