Re: APOD: North Celestial Tree (2013 Oct 23)
Posted: Fri Oct 25, 2013 4:23 pm
Chris Peterson wrote:No need to imagine. The Earth's rotation rate actually does make the stars look like this. That's why we have this image.BDanielMayfield wrote:Imagine that the Earth's rotation rate was so fast that stars actually looked like this!
The only times I've seen star trails (or trails from any other object) in real time (as opposed to looking at a time lapse photogragh) was when I was following the advice of Timothy Leary. Perhaps that Rocky Mountain water is more potent than Coors lets on....Chris Peterson wrote:It's not my retinas that are involved, but my memory. I constantly notice the apparent rotation of the sky when I'm outside.Anthony Barreiro wrote: Chris, if your retinal afterimages last two hours, you should probably see an opthamologist. Most people's afterimages only last about half a second. If the Earth were rotating this far in half a second, well, I'm not good at math, but it would be pretty darn fast.
