No alignment is done on the images so that they are mosaicked in the pixel frame (this means that if
data exists from multiple subarrays, they will be averaged together!). A method to determine the
frame-to-frame variance is provided which writes out to a log file called log.noise which
can be monitored by the StripChart. The relevant column to monitor is
This primitive is not designed to handle time series observing modes.
If the frames are identical, then the Group mosaicked image with contain
" . In that case, add
the argument GENVAR=0 to _MAKE_MOSAIC_FRAME_.
If there is no variance,
" will be written to log.noise. The stripchart may or may not do
something sensible with that.
The Group image variance is written to log.noise for monitoring with the StripChart.