You’re assuming that Hubble knew WHERE to look.
“Youre assuming that Hubble knew WHERE to look.”
Orbital mechanics tells you where to look.
ISON is NOT being magically pulled into us.
If it were, then so would much of these:
http://www.minorplanetcenter.net/iau/Animations/Inner_2011.gif
http://www.naic.edu/~gibson/thesis/true_w2bjir_9_zoom.jpg
Pleaides.
BPEarthwatch uses a green filtered image of that in his video “Comet ISON debris moving fast”.
Again, your source is a liar.