[LINK] More with google maps - Uluru and Great Wall

[Adam Todd]

Maybe Google has invented a new Shadow!  The RGBadow :)

I suppose moving at 800km's per hour could cause some shift in the 
imaging capture.  Assuming it is captured in multiple passes.  But 
then, won't that also affect the shadow on the ground below the plane?

Which I can't actually find on the map at all!

At 04:20 PM 3/05/2007, Markus Buchhorn wrote:
>At 11:38 AM 3/05/2007, Paul Brooks wrote:
> >Markus Buchhorn wrote:
> >>Yes, I've spent way too much time myself looking for things like 
> the sites of the 80 treasures series :-). Closer to home though, I 
> do have one unusual find:
> >>http://maps.google.com/?ie=UTF8&ll=-35.463252,148.722943&spn=0.002 
> 08,0.004206&t=k&z=18&om=1
> >>Took a while to work out what had happened here...
> >>
> >And what do you suspect did happen, Markus? I hazard a guess its 
> an artifact from different scan times of the R, G and B colour channels.
>
>Basically spot-on. The satellite that takes many of the images for 
>Digital Globe (now a Google company) takes two images in quick 
>succession; a high-resolution pan-chromatic (greyscale) image, 
>followed by a lower resolution colour image (which I think does RGB 
>in one pass, possibly). Hence the VirginBlue coloured shape flying 
>ahead of the well-defined 737 image :-) For static objects, the 
>registration of the two works fine, but for high-speed objects it 
>has some grief.
>
>Interestingly, most other aircraft in flight look fine. So either 
>it's a different satellite, it happens to be flying at right-angles 
>to the scanlines, or the satellite had a hiccup on the day and the 
>gap between images was much larger than usual. There are at least 2 
>more examples at Sydney airport on the runways, but nowhere else 
>I've found so far. If anybody finds other examples please let me know.
>
>Cheers,
>         Markus
>
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