What does "Quasi-static Speckles" mean?

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Quasi-static speckles are small bright and dark spots that appear in images taken by telescopes, especially when looking at distant stars and planets. These spots are caused by tiny movements in the atmosphere and other things that can change how light travels.

When astronomers try to take clear pictures of distant objects, these speckles can make it hard to see what they want. The spots can shift around slowly, which means they don't change quickly like other noises might.

To get rid of these speckles, scientists use special methods and tools. One way to reduce their effect is by using a deformable mirror that can adjust its shape. This mirror helps to correct the image in real-time, allowing for clearer views of planets or other objects in space.

By managing these quasi-static speckles, astronomers can make better observations and learn more about the universe.