RFM Flags

ILS Flag: Convolve with Instrument Line-Shape


Driver Table requires *ILS section
Perform spectral convolution with (Apodised) Instrument Line Shape (or Spectral Response Function)
*SPC section: resolution RESSPC interpreted as final output resolution only (decoupled from Fine Mesh Calculation resolution).

*SPC section resolution RESSPC defines resolution both for Fine Mesh Calculation and for output spectra.
Ignore *ILS section.

Incompatible with AVG, OPT and TAB Flags.

  1. The AVG provides a simpler means of automatically convolving with a triangular line shape, which is the recommended option if all you need is an output grid which represents the average values over spectral intervals rather than discrete samples of the spectrum.
  2. The incompatibility with the OPT flag is on the basis that instruments do not measure optical thickness directly, so spectral averaging in 'optical thickness' is meaningless. If you really do want this (and are you sure you do?) output the convolved transmittance spectrum τ and note that optical thickness χ = - ln τ.
  3. See *ILS section for further details

Bug#120 (Fixed v4.36)
Bug#96 (Fixed v4.33)
Bug#52 (Fixed v4.25)