I want to start by explaning a few things about how my thought process works, I need to do this first so it puts the rest of my research in context. I had a stroke several years ago, brought on by a cardiac arrest episode I had back in 2009, I have been implanted with a pacemaker/difibrillator. I am very fortunate that I am a Veteran and get all my medical care at the VA hospital, well the stroke didn't help but I recovered from that also, the only long term side effect from that is, I have a short term memory problem that I have to work at diligently every day on, so I have to keep a log book of my day's events that I feel are important so I do not forget.

This includes much of my research, that is why I have log books especially designated just for that. I feel that its important for me to divulge this kind of very personal information because it not only helps me mentally, but hopefully will bring a little clarity to some of my remarks. So engaging in this type of work to me is very much like an athlete rebuilding himself after a severe accident, I would just ask for a little forgiveness and patience.

So I am having trouble understanding how to apply gain correction as it pertains to data processing of spectra? I have re-read all of Dave @Stoft work on the subject and I understand the concept of it but not how to apply it when I am processing data in spekwin. The help files in spekwin32 are very limited in their scope of explanation and Dr.Menges is not always available to ask these kind of questions.

So I downloaded the actual solar spectrum from the National Weather Center and I will post the link also, I produced a plot with my Solux 50W lamp, the solar spectrum and my latest CFL calibration, the plot is elow and this is were I do not know how to proceed from there?