A Geometric Distortion Solution Specifically for Historical Observations and its Implementation
F. R. Lin,
Q. Y. Peng,
Z. J. Zheng
et al.
Abstract:Geometric distortion (GD) critically constrains the precision of astrometry. Using well-established methods to correct GD requires calibration observations, which can only be obtained using a special dithering strategy during the observation period. Unfortunately, this special observation mode is not often used, especially for the historical observations before those GD correction methods presented. As a result, some telescopes have no GD calibration observations for a long period, making it impossible to accu… Show more
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