Fig. 7


Download original image

A schematic illustration of the complete MOF instrument for photospheric observations. Collimated sunlight passes through a two-stage filtering process. The filter section consists of an atomic vapour subject to an axial magnetic field placed between crossed polarisers. The temperature of the vapour and the strength of the magnetic field are chosen to achieve a suitable narrow transmission profile – with two wings – centred on the atomic resonance. The second vapour cell and quarter waveplate are used to encode the transmission of the opposite handedness of circularly polarised light into vertical and horizontally polarised light, which is subsequently imaged by cameras CMOS1 and 2, respectively.

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.