[jsmoraes (Jorge)]

As I saw:

first: the comet alive

second: the begining of outburst: the bright region left behind with no continuity with de head of comet.

third: not viewed, but already died

fourth: the consequence of outburst. The bright at region where ISON was travelling

note: it seems the better place to this post should be in General Astronomy > Observational and Visual Astronomy > ISON outburst.

Excuse me for the fault.