>>> How the holy hell do you make a camera lens /that/ shape? And what the
>>> heck is holding the camera up??
>>
>> This looks shopped. I can tell by the pixels
>
> If it was a synthetic image, would it have this much chromatic dispersion?
>
>> Also, http://apod.nasa.gov/apod/ap100803.html
>
> I still can't figure out how they did this...

Did you read the explanation in the links below the picture?

For your Parisian dawn picture, here's what you need to do:
- Put your tripod on a bridge.

- Change lense to use a fish-eye lens.  Take a picture looking straight 
down from yout tripod.  (You could maybe fake this in The Gimp, but 
you'd need at least a wide-angle lens and a very tall tripod to be able 
to get the Seine and the whole bridge in your field of view)
- Go back home.
- Load the pictures onto your computer
- In The Gimp,
  - Stich the pictures into a panorama.
  - use the "convert to polar cordinates" filter to bend your panorama 
into a doughnut.
  - stich the fish-eye picture in the doughnut hole.

The end.

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