If ast.zero_snr_fwhm is
non-zero, the map-maker produces two maps: the first is created normally using the mask specified by
. The final SNR-based mask associated with this map is then smoothed using a
Gaussian with FWHM equal to the ast.zero_snr_fwhm value (in arcsec). The whole iterative map-making
process is then run again from the start, using this smoothed mask on every iteration, to create the final map.
Consequently, setting ast.zero_snr_fwhm causes the time taken to create the final map to nearly double. [0.0]
Copyright © 2014-2015 Science and Technology Facilities Council,
East Asian Observatory