This step is not required for the simplified workflow.
SMURF provides separate routines for calculating images from STARE and DREAM data. STARE images are calculated with starecalc; DREAM images are calculated with dreamsolve.
In starecalc the user may specify how many samples to average to create images (the default is to calculate averages once a second).
dreamsolve requires the DREAM weights file specified in the FITS header keyword DRMWGHTS to reside in the current directory. Data from each subarray require a corresponding weights file. See section below for details on calculating alternative weights files.
SMURF -- the Sub-Millimetre User Reduction Facility