Oh well, I'll take my leave of this thread. Good luck all
EDIT: sorry, back again!
Just read Chucky's Blog - I must "get a life" - and I quote from his "Observing the Canals on Mars!" entry:- "I strongly suspect that NASA cameras, (and cameras in general), are not sensitive to the light frequency required to see the canals, or required to piece images together. We see with our minds, our eyes are an instrument. There appear to be shadows of the canals evident on the Hubble photographs, but as always, they simply do not show up very well on photographs at all! Several 'canals' look like strings of craters." Seems to me that Chucky achieved what Percival Lowell achieved - they both saw canals in their minds.