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26 September 2013 Analysis of images obtained from space-variant astronomical imaging systems
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Most of the classical approaches to the measurement and modeling of electro-optical imaging systems rely on the principles of linearity and space invariance (LSI). In our previous research efforts we have focused on measurement and analysis of images obtained from a double station video observation system MAIA (Meteor Automatic Imager and Analyzer). The video acquisition module of this system contains wide-field input lens which contributes to space-variability of the imaging system. For a precise astronomical measurement over the entire field of view, it is very important to comprehend how the characteristics of the imaging system can affect astrometric and photometric outputs. This paper presents an analysis of how the space-variance of the imaging system can affect precision of astrometric and photometric results. This analysis is based on image data acquired in laboratory experiments and astronomical observations with the wide-field system. Methods for efficient calibration of this system to obtain precise astrometric and photometric measurements are also proposed.
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Elena Anisimova, Karel Fliegel, Martin Blažek, Petr Janout, Jan Bednář, Petr Páta, Stanislav Vítek, and Jan Švihlík "Analysis of images obtained from space-variant astronomical imaging systems", Proc. SPIE 8856, Applications of Digital Image Processing XXXVI, 885607 (26 September 2013);

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