Lucky Imaging with AstraLux Sur and AstraLux
| What is Lucky Imaging? Image distortions due to atmospheric seeing are not static. The degree of image degradation varies over a wide range on timescales of seconds. Exploit this fact and: (1) Acquire a large number of short-exposure images, typically 10.000 * 30ms (needs high-speed, high-sensitivity, low-noise detector). (2) Measure the image quality of each single frame (needs a reference object). (3) Select the best few percent of all images, typically 1-10%. |
(4) Combine these high-quality images to get the final improved result. Pioneering work by Craig Mackay, Bob Tubbs et al. at the Nordic Optical Telescope (LuckyCam). MPIA AstraLux Sur team: Wolfgang Brandner, Stefan Hippler, Felix Hormuth, Markus Janson, Sebastian Daemgen, Boyke Rochau, Armin Böhm, Armin Huber, Ralf-Rainer Rohloff, Karl Wagner, Thomas Henning |
