How to convert quasar flux time series from observed frame to rest frame? I have flux time series of quasars in the observed frame and want to convert it in the rest or quasar frame. Any one who can help? Thanks
This is not an answer, but it is too long to put in the comment.

I am not familiar with quasars. In general, converting fluxes from an observed frame to a rest frame requires following consideration: extinction correction, cosmological expansion, k-correction. I think the simplest form is $f_{rest} = (1 + z)^n f_{obs}$ where $z$ is redshift and $n$ is some integer depending on how to express the unit of fluxes. This considers only the cosmological expansion. But, I am not sure if this transformation is valid with your quasars because they might be too far that $(1+z)^n$ is no longer a good approximation.