Comparison of the image quality using a subband-based initial calibration technique and standard self-calibration procedure (left), a subband-based initial calibration and the self-calibration technique described in Sect. 2.2.2 (middle), and a channel-based initial calibration technique and the self-calibration technique described in Sect. 2.2.2 (right). The biasing of the flux towards the east and west direction and resulting sidelobes are easily visible in the first image. These effects nearly vanish in the second image and completely disappear in the last one. The images show only the first subband of the observations with 80 MHz bandwidth at λ22 cm without any primary beam correction.
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.