Celestia Forums

I was looking at some space photographs form sattelites and shuttles, and it looks to me that Sun is much more brighter and has larger disc than it's shown in Celestia.

Can it be fixed? (if possible, without editing the source code....)

Jango Fett wrote:I was looking at some space photographs form sattelites and shuttles, and it looks to me that Sun is much more brighter and has larger disc than it's shown in Celestia.

What sort of pictures were these? It's unusual (and undesirable!) to include the Sun in a normal photograph, and any astronomical views will be either heavily filtered or taken at non-visible wavelengths.
But in answer to your questions:
The size of the Sun's disc is correct in Celestia - remember that the default view is quite a wide-angle one compared to most astronomical photographs.
A realistic range of brightnesses is always a problem with any sort of monitor display - for everything to be visible, the relative brightness of the Sun has to be reduced dramatically. (And, to be fair, you wouldn't really want a monitor that could generate light intensities high enough to fry your retina ... )

Grant

I see... that seems logical...

thanks!

Grant, i agree with you that a monitor will never can show the full range of brightnesses of the reality. But the question of jango is justified. The Celestia render engine has one problem that can't render object (textures) brighter (except with bumpmapping and specular reflection) that render only shadows. That means the maximum brightness of an object is only the standard color of the texture. For this reson i tend to built all my textures to bright.
Ok, i would say it's not a bug of celestia but a lack. I hope chris or an other developer will here my call for more brightness.

Gamma correction would be a solution. For me looks a value between 1,2 and 1,5 great.

Bye Jens

p.s. To set the gamma correction in the display options is no solution because all the other applications would look to bright.