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Calculating images from time-series data

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.



next up previous 537
Next: Combining the images
Up: DREAM/STARE data reduction workflow
Previous: Correcting for atmospheric extinction

SMURF -- the Sub-Millimetre User Reduction Facility
Starlink User Note 258
Edward Chapin, Andrew G. Gibb, Tim Jenness, David S. Berry, Douglas Scott & Remo Tilanus
14th February 2013
E-mail:starlink@jiscmail.ac.uk

Copyright © 2012 University of British Columbia \& the Science \& Technology Facilities Council