2010/04/19 by A. Bellini, L. R. Bedin
Physics and Astronomy · #Adaptive optics and wavefront sensing #Artificial intelligence #Astrometry #Astronomy #Bessel function #Bundle adjustment #Computer science #Diagram #Distortion (music) #Galaxies: Formation, Evolution, Phenomena #Image (mathematics) #Optics #Physics #Proper motion #Stars #Stellar, planetary, and galactic studies #Telescope #astro-ph.IM
paper · pdf · doi:10.1051/0004-6361/200913783
13 pages, 11 figures, 4 tables. accepted for publication on Astronomy and Astrophysics
openalex publication_date 2010/04/19 · arxiv created 2010/05/05 · arxiv updated 2010/05/07 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/31
High precision astrometry requires an accurate geometric-distortion solution. In this work, we present an average correction for the blue camera of the Large Binocular Telescope which enables a relative astrometric precision of ~15 mas for the and <i>V<i/><sub>Bessel<sub/> broad-band filters. The result of this effort is used in two companion papers: the first to measure the absolute proper motion of the open cluster M 67 with respect to the background galaxies; the second to decontaminate the color-magnitude of M 67 from field objects, enabling the study of the end of its white dwarf cooling sequence. Many other applications might find this distortion correction useful.