Forums Spectroscopy Relative Flux Calibration Atmosphere

Paul Luckas

Hi Andy, all,

The response tool in ISIS divides the spectrum of our processed standard star by a Miles (or other) standard to create a response profile – which is then smoothed before applying to our target spectra during processing.

Assuming the database standard has been corrected for atmosphere, shouldn’t we be doing the same (ie, invoking ‘auto atmosphere’ with an AOD value) when we pre-process our standard star? Otherwise, how does ISIS correctly correlate the atmosphere corrected Miles standard with our non-atmosphere corrected calibration star.

What am I missing?