Superresolution in compensated telescopes.
We present a procedure for attaining resolution beyond the diffraction limit in ground-based telescopes. This procedure is based on the use of rotationally symmetric pupil plane filters that can be easily implemented in dynamic optical devices such as a deformable mirror of an adaptive-optics system. We show that a successful application of the technique requires partial compensation for atmospheric distortion by adaptive optics. Consequently, we derive the required level of compensation as a function of the atmospheric conditions. Finally, our results are checked using simulated data.
Canales
Vidal F
VF
Departamento de Física Aplicada, Universidad de Cantabria, Los Castros S/N, Santander 39005, Spain. fernancv@unican.es
de Juana
Daniel M
DM
Cagigal
Manuel P
MP