Free Access

Fig. 4

image

Top panel: transmission (solid) and reflection (dashed) of the red/vis (red) and vis/blue (green) dichroics, respectively, the QE of the EMCCD camera (solid black), and the QE of the focus camera (dot-dashed blue). Middle panel: instrument efficiency of the red (solid red line), visual (dashed green line), and focus channel (blue dot-dashed line). Bottom panel: normalised passbands of the Johnson-Cousins UBVRI photometric system (dashed lines) plotted along with the system sensitivity of the SDSS ugriz camera (solid lines). The latter is based on a sensitivity determination made by Jim Gunn in June 2001, which is available as a FITS file at http://www.sdss3.org/instruments/camera.php.

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.