Translator Disclaimer
7 October 2008 Compact active high-resolution imaging system
Author Affiliations +
High-resolution telescope systems used for observational tasks require sufficiently large apertures to enhance the spatial resolution. Due to the propagation through turbulent layers of the atmosphere the distorted wavefront implicates a broadening of the imaged spot and hence a loss in optical resolution. The improvement in visual resolution by applying adaptive optics has been successfully demonstrated in a mobile telescope platform. To compensate for the effects of atmospheric turbulence, a closed-loop system was developed with a bandwidth of up to 600 Hz capable to achieve a wavefront correction with a residual wavefront deformation of <50 nm RMS. A reference signal which is probing the wavefront distortion is realized with the help of a coherent laser beam emanating from the object. The developed adaptive optical system is capable of compensating phase distortions in a conjugated plane with time constants of 30 ms. Turbulence was artificially induced along the optical path by a turbulence generator. Measurements of MTF values and Strehl ratio will be presented.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ivo Buske and Wolfgang Riede "Compact active high-resolution imaging system", Proc. SPIE 7112, Unmanned/Unattended Sensors and Sensor Networks V, 71120B (7 October 2008);


Actuator requirements for laser power beaming
Proceedings of SPIE (April 30 1994)
Horizontal turbulence measurements using SLODAR
Proceedings of SPIE (August 17 2005)
High-speed seeing measurements at the Keck Telescope
Proceedings of SPIE (May 30 1994)
Closure phase imaging with low-order adaptive optics
Proceedings of SPIE (June 08 1994)
An inflatable circular membrane mirror for space telescopes
Proceedings of SPIE (February 09 2005)
Adaptive optics for the SALT
Proceedings of SPIE (July 14 2008)

Back to Top