To Imaging, and Beyond!

Some interesting papers from the Astrometry section that held on Wednesday. This is not about the Adaptive optics, but still contains some interesting points.


 

It is well known fact that the Tip/Tilt is the main source of distrubance in atmospherical seeing. Other distortions to consider are geometrical ones, like cushion/barrel.

Atmosphere is like a prism - it can displace the star position. Advantages of large telescopes are therefore reduced by CDAR noise.

Dynamic distortion calibration using a diffracting pupil: high-precision astrometry laboratory demonstration for exoplanet detection, . . . . . . [8151-29]


They want to create diffraction spikes.