Specifies the largest scale size to be retained by the initial data cleaning FILT_EDGE_LARGESCALE
"
filt_edge_smallscale"
, this specifies the frequencies which the initial
data cleaning is to remove from the data streams, based on a range of requested spatial scales (in arcsec), and
using internal measurements of the average slew speed. These will override parameter "
filt_edgehigh"
and
parameter "
filt_edgelow"
. For example, suppose the slew speed is 100 arcsec/sec. We want to
ensure that the beam is fully sampled, say 2 arcsec at 450um. That scale is crossed in 2/100 = 0.02
s, so we don’
t need frequencies in the data above 1/0.02 = 50 Hz in this case (i.e. internally it
will set filt_edgelow to 50Hz if filt_edge_smallscale is set to 2 arcsec). Similarly, if we would like
to attempt to preserve scales of 10 arcmin = 600 arcsec, we would want to keep frequencies that
are greater than 1/(600/100.) = 0.17 Hz (i.e. setting filt_edge_largescale=600 would translate into
filt_edgehigh = 0.17 Hz). [0]