Re: Can someone smarter than me...
I would have assumed those effects cancel out?
Sure, we're looking at a field hundreds of millions of light years across, but we're also trying to focus on something billions of light years away - bits of it are billions of light years closer to us than other bits. There'd be some really complex parallax effects to cancel out if there were any movement at this end at all.
On the face of it it would make sense for some bits to be experiencing motion blur and other bits not.