http://adsabs.harvard.edu/abs/2008MNRAS.388.1686L
They measured the spin of a few 100000 galaxies in both hemispheres. At first they found the _same_ preferred spin in any direction, then they started mirroring half of the galaxies before showing them to people and the effect vanished. They found no dipole.
Slashdot Mirror
Sorry, should have re-read first. It was only ~37000 galaxies.
http://adsabs.harvard.edu/abs/2008MNRAS.388.1686L They measured the spin of a few 100000 galaxies in both hemispheres. At first they found the _same_ preferred spin in any direction, then they started mirroring half of the galaxies before showing them to people and the effect vanished. They found no dipole.