2 papers
astro-ph2005
Robust Reconstruction from Chopped and Nodded Images
Frank Lenzen, Otmar Scherzer, Sabine Schindler
In ground based infrared imaging a well-known technique to reduce the influence of thermal and background noise is chopping and nodding, where four different signals of the same ob…
astro-ph2003
Automatic detection of arcs and arclets formed by gravitational lensing
Frank Lenzen, Sabine Schindler, Otmar Scherzer
We present an algorithm developed particularly to detect gravitationally lensed arcs in clusters of galaxies. This algorithm is suited for automated surveys as well as individual a…