Free Access
Fig. A.1.
Download original image
Schematic illustration of the default MSA observing scheme where each target is assigned a three shutter tall slitlet, and the telescope is nodded between subexposures such that the target is cycled between the three shutters of the slitlet.
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.