Yousuf Khan wrote:
Sam Wormley wrote:

Is there any estimates about if a quasar were to exist today, how
bright it would be comparatively in our sky?
Yousuf Khan


http://www.nrao.edu/pr/1998/quasars/


This seems to indicate that nearby quasars are pretty normal looking in
visible light, but they're lit up in radio light. But aren't quasars out
in the distance supposed to be very bright in the visible?

Yousuf Khan

This is a over generalization... but black holes in younger
galaxies enjoyed more available gas and stars to "consume"
and therefore where "brighter" energy sources than nearby
older quasars. You would have to look at individual quasar
spectral data to answer your questions about wavelength
patterns.