~Atmospheric Turbulence Simulator~ | ||||||||||
Optical
system that simulates the perturbing effects of the atmosphere to
create an image of a star with a realistic time-varying PSF. A common
apparatus for adaptive optics developers, we use this to simulate
putting a sensor "on the sky". Rotating phase screens with a surface
structure consistent with the Kolmogorov turbulence frequency spectrum
are our atmosphere. A Thorlabs wavefront sensor measures the real-time
wavefront shape. The LASSO optic (above) provides the final imaging stage.
Apparatus inside darkbox. Prototype. Measurements of phase screens from vendor (UC Santa Cruz). |