hy wrote: Obviously, it looks suspicious that all the HFR values are 0.940.
It would be good to know if the system is computing them wrong, or if they are being recorded wrong.
Did you say that they were being displayed correctly on the fitsviewer?
It will be hard for me to debug -- so the more info you can provide (and of course the more debugging you can do, if you're comfortable with that)
BTW, what kind of camera, etc?
The fits viewer does give numbers that are a bit different and seem more correct. I'm happy to debug.