Celestia Forums

Well after putting it off for over a month I decided it was time to rework the nightside texture with aurora to be more acurate. I did some research and and have come as close as posible to proper placement. As it was shown to me, and what I found on the net is the Aurora Borialis hangs much lower over North America and Greenland and then just skirts over the top of Norway and Russia. The Aurora Austrialis does a similar thing but it hangs out over the ocean toward Austrailia. So I have implemented that. Of course these are just preliminary tests and the effect is probably way over overboard. But it will give everyone an idea of whats to come.
Here is a shot from the nightside of North America.

Next is over the North Polar region.

And the South Polar region.

Now the aurora is still on the nightside texture. But I have made them a little transparent this time. So some of the most northern city lights show through. Now if I could just get it to float over the polar region instead of it being below the clouds.
Feed Back welcome as always.
Don

Can you send this texture? To my e-mail AJTudela@hotmail.com
Please
Thank you

Alberto

It looks pretty enough, but that's very difficult to have an opinion without testing it... It seems a little big, but I reserve my commentary after seeing it for "real".

Would you put it for download ?

Actualy the diameter is right, but the width might be a little bigger than normal. Its hard getting an idea because there are not very many pictures of the auroras from orbit. And most of them are not at the visible wavelinks but infrared and ultraviolet. I still have a little work to do on smoothing out the transition from one end of the texture to where it conects with the other. Give me alittle while and I will have something for download soon. I have a bunch of projects going at the same time and I keep jumping from one to the other. It kind matters what mood I am in. Is it an Earth texture night, or is clouds or auroras and anything else I might be doing. Like tonite is going to be hardware night. I have to pull a bad uniterupted power backup bacause its breaker keeps knocking my system out. I have only lost a very little data because of this but I have noticed other things acting screwy. Like my cable modem. So I can only take time to answer questions in the forum and then I have to get to work on the hardware.
Don

Brilliant! Looks very good to me.
In visible light it's generally colourless in the dimmest areas, brightening to a pale green, with yellow ribbons and bands in areas of maximum brightness - which would occur streaked through the broad North American segment of your display. (Actually, the yellow comes from curtains of light that are green at the top and red at the bottom edge, so they look yellow when seen from directly above or below, but that might be just a tad tricky to produce. )
The exact tone of green is quite characteristic, since it's a narrow emission band from atmospheric oxygen, but there are any number of images you could sample on the web to get the right shade.

Grant

I have put up an alternate night texture based on real data. This was from the astronomy picture of the day several years back.

the texture and image will be on my web page soon.

Nice work
I have put up a Jupiter aurora texture in my downloads section

Hear is a screen shot (if it works)

Could you make one for Io tht covers the entire nightside?
I no that Io has giant arorias and I want to see them in celestia.

I really can't be asked to log into another site
that is totally unnecessary to log into

Why do so many web site insist on this pointles thing.