Because of the design of the SXT and the spacecraft telemetry system,
images are never obtained in two different filters simultaneously. If the solar
fluxes vary rapidly compared to the observing cadence, it is recommended that
you interpolate the intensities of one filter to match the time at which the
data in the other filter were acquired. This can be done using SXT_INTERP,
which will do a linear interpolation on a pixel by pixel basis. An example
calling sequence is:
IDL> SXT_INTERP,index1,data1,ntimes,unc1,sat1
where ntimes is an array of times to which the interpolation should be made.
For example, in the case given here, it would be appropriate to set
IDL> ntimes = index2
in order to interpolate the filter ``1'' data to the times of filter ``2''
data.
Note that SXT_INTERP ``over-writes'' the input variables (to save memory).