It's not the wavelengths that are the problem but the exposure times; even with our best sensors we still need long exposures to capture compelling images of galaxies and nebulae. I don't think it will ever be possible in real time.
that's not a problem with displaying that information.
the post you replied to is not wanting to see like Geordi LaForge from Star Trek: The Next Generation; in real time. they're (at least I think they are) wanting to visualize already captured information, such as x-ray and radio emissions overlaid a view of the night sky.
