Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken? It is surface brightness, so it is tricky.
heehaw wrote:Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken? It is surface brightness, so it is tricky.
Can any nocturnal creatures see the sky like this?
Don’t think it would be a good trade though. Daytime would be blinding. We’d have to live like bats.
Bruce
Just as zero is not equal to infinity, everything coming from nothing is illogical.
heehaw wrote:Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken?
It really comes down to how many photons you can collect. The eye only detects between 1% and 5% of the photons it receives. A good CCD detects close to 100%. So with a better designed retina, we could do much better. We also have a tiny aperture to admit those photons- just a few millimeters, compared with tens to hundreds of centimeters for telescopic optics. So if we had huge, bulging eyes we could do much better. And finally, our retinal chemistry yields an exposure time of tens of milliseconds, compared with minutes or hours for electronic imaging systems. If we could selectively increase our integration time, we could do much better.
Chris
*****************************************
Chris L Peterson
Cloudbait Observatory https://www.cloudbait.com
ptirnovan wrote:I cannot find the website of Lu Shupei! Can anyone help me with his adress? I'm looking for more photos like that!
It's not a web site. It's an e-mail address. Send an e-mail.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk. — Garrison Keillor
heehaw wrote:Wouldn't it have been interesting if evolution had developed in us the ability to see the sky as in this photograph, i.e. with colors e.g.? Not necessary for survival so we don't have it. What would it have taken? It is surface brightness, so it is tricky.
Can any nocturnal creatures see the sky like this?
Don’t think it would be a good trade though. Daytime would be blinding. We’d have to live like bats.
2014’s Orionid Meteor Shower
By: Kelly Beatty | October 19, 2014
<<The Orionid shower is a long-lasting affair that runs from roughly October 17th to 25th and peaks around the morning of the 21st. This shower is actually a complex of several threads of debris that arrive over several days. These radiants (the points in the sky from which the meteors appear to radiate) are grouped near Orion's club.
Since Orion doesn't rise in the east until around midnight, you'll have to stay up at least that late (or get up very early) to see any Halley bits flashing across the sky. For observers around 40° north latitude, the shower's radiants rise high in the eastern sky (at least 45° up) by about 2 a.m. So that's about when the meteor activity is best. Dawn's twilight begins stealing into the east about four hours later.
Like the Eta Aquariids, the Orionids tend to be faint and swift, as they strike our atmosphere at 66 km per second (only November's Leonids come in faster) — and they often leave briefly glowing trains.>>
Orionid Meteors from Orion
