Screen becomes dark

There is no functionality in the application to dim the screen.

Thank you for your answer.
It´s amazing. You say that there is no dimming function in Stellarium. But when I start the program the screen is brigt and well readable. After about 2 seconds the screen is starting to dim and after 3 more seconds the sceen is so dim that neither the stars nor the text of stardiscription and setup are readable. After leaving stellarium the sceen is still very dark and it takes about 10 seconds to recover and the desktop is readable again.
Do you have any idea to solve the problem?

Hi Otto,

As Tim said, there is no screen-dimming function in the program. There is the dynamic eye adaptation feature, which adjusts the brightness of less bright stars when a very bright object like the moon comes into the field of view (to simulate the dazzle effect, and scattered light in the atmosphere), but it doesn't sound like that is what happens to you.

Some questions:

1. Do the tool bar icons also dim?
2. What happens when the simulation is daytime. Do you see the blue sky? Does that dim too?
3. Does it happen in both full screen and windowed mode (press F11 to swap)
4. If it happens in windowed mode, do things in other windows also dim?
5. Does the screen dimming show up in screen shots?

Some guesses:

1. Your computer is set up to dim the screen under some circumstances. I believe there are some video drivers which use different profiles when you are running different types of application. Perhaps yours is one of these and it is set to change the gamma to some silly value when OpenGL apps are running.
2. Your video driver is crazy or broken when running OpenGL applications
3. Someone implemented screen dimming when nobody was looking.
4. Something totally unexpected and funky.

M

Hi Matthew,
thank you so much for your answer. To Your questions:
1. Yes, the toolbars dim also. They are nearly invisible. Clicking on one tool opens the window but the informations are nearly unreadable.
2. On daytime simulation the picture is quite normal.
3. Yes it happens in window mode also but the visible desktop stays bright. Swapping to full sceen keeps the screen dim. Swapping back to window mode schows window and desktop dim. But the desktop starts to brighten and is full bright after about 10 seconds while the window stays dim.

Thank you for dealing with my problem. I am not a profi but after retiering I try to find out more about what is going on in the sky. As Stellarium is a very good companion in exploring things, I would be glad if my problem could be fixed.

Otto