Q&A: Supernova Remnants and Neutron Stars
What country has the best astronomical records of the Great Supernova of 1054 AD?
That would be China. It's likely there were also Arab and European
records of this spectacular event but almost none of them survived to the
There is a page on the creation of the Crab Nebula, which is the remnant
of the supernova of 1054, at http://www.seds.org/messier/more/m001_sn.html
that includes historical details.
Chandra X-ray images of the Crab may be found at: http://chandra.harvard.edu/photo/2002/0052/
Animation and videos of the Crab and other supernova at: http://chandra.harvard.edu/resources/animations/pulsar.html