I thought I should explain how I use the...

I thought I should explain how I use the zoom sequences to sort out the real from the unreal:

If a feature changes focus and size during a zoom sequence -- then it is real.

If it does not change position or size, then it is most likely a CCD or lens artifact.

If it appears -- and then disappears -- then it is most likely a JPG artifact.

These simple rules can be used to observe very subtle features even in the presence of image artifacts.

3D zooms provide even better observational tool.

A few degrees of rotation of the scoop would do wonders for the RAC observations.