Searched for: subject:"telescope"
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document
Wijnholds, S.J. (author)
The radio astronomical community is currently developing and building several new radio telescopes based on phased array technology. These telescopes provide a large field-of-view, that may in principle span a full hemisphere. This makes calibration and imaging very challenging tasks due to the complex source structures and direction dependent...
doctoral thesis 2010
document
Van der Avoort, C. (author), Pereira, S.F. (author), Braat, J.J.M. (author), Den Herder, J.W. (author)
In optical aperture-synthesis imaging of stellar objects, different beam combination strategies are used and proposed. Coaxial Michelson interferometers are very common and a homothetic multiaxial interferometer is recently realized in the Large Binocular Telescope. Laboratory experiments have demonstrated the working principles of two new...
journal article 2007
document
Doelman, N.J. (author), Hinnen, K.J.G. (author), Stoffelen, F.J.G. (author), Verhaegen, M.H. (author)
An Adaptive Optics (AO) system for astronomy is analysed from a control point of view. The focus is put on the temporal error. The AO controller is identified as a feedback regulator system, operating in closed-loop with the aim of rejecting wavefront disturbances. Limitations on the performance of feedback regulator systems are discussed. The...
conference paper 2004
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Giesen, P. (author), Ouwerkerk, B. (author), Van Brug, H. (author), Van den Tool, T. (author), Van der Avoort, C. (author)
Homothetic mapping is a technique that combines the images from several telescopes so that it looks like as though they came form a single large telescope. This technique enables a much wider interferometric field of image than current techniques can provide. To investigate the feasibility, a research testbed is build know as Delft Testbed...
conference paper 2004
Searched for: subject:"telescope"
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