› Forums › Spectroscopy › Relative Flux Calibration › Using the AOD to do a second order correction for extinction
Yes, I believe so Robin. In fact that’s exactly what I did for the aforementioned high cadence campaigns (gam2 Vel, zet Pup). I created a response correction, initially processing the reference star with AOD enabled. At the time I assumed it was necessary in order to compare to the (presumably corrected) published references when creating the IR profile.
I must confess though, I’m no expert. Bernard H., provided much of the guidance during my initiation into these campaigns, having spent many more hours (years !) working with both the ISIS and the pros in question. I’m still [mostly] confused about how to use this feature, particularly when it comes to determining the correction value. As such I’ve reverted to back the conventional method of correction using a nearby standard for each session and leave AOD switched off.
I do recall seeing some analysis (again, from Bernard) that showed only minor – almost insignificant – variations between the two methods – supporting the consistency of the ‘one IR’ method.
Cheers,
Paul