Ground-based CCD astrometry with wide field imagers. IV. An improved Geometric Distortion Correction for the Blue prime-focus Camera at the LBT
arXiv:1005.0848 · doi:10.1051/0004-6361/200913783
Abstract
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 B_Bessel and V_Bessel 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 M67 with respect to the background galaxies; the second to decontaminate the color-magnitude diagram of M67 from field objects, enabling the study of the end of its white dwarf cooling sequence. Many other applications might find this distortion correction useful.
13 pages, 11 figures, 4 tables. accepted for publication on Astronomy and Astrophysics
References in corpus (5)
- Ground-Based CCD Astrometry with Wide Field Imagers. I. [Observations just a few years apart allow decontamination of field objects from members in two Globular clusters.]
- Ground-based CCD astrometry with wide field imagers. II. A star catalogue for M67: [email protected] MPG/ESO astrometry, FLAMES@VLT radial velocities
- The performance of the blue prime focus Large Binocular Camera at the Large Binocular Telescope
- The end of the white dwarf cooling sequence in M 67
- Absolute proper motion of the Galactic open cluster M67
Cited by in corpus (9)
- A Deep View of a Fossil Relic in the Galactic Bulge: The Globular Cluster HP1
- Variable stars in two open clusters within the Kepler 2-Campaign-0 field: M 35 and NGC 2158
- Absolute proper motion of the Galactic open cluster M67
- High-precision astrometry with VVV. I. An independent reduction pipeline for VIRCAM@VISTA
- GeMS/GSAOI photometric and astrometric performance in dense stellar fields
- Hunting for intermediate-mass black holes in globular clusters: an astrometric study of NGC 6441
- A bag of tricks: Using proper motions of Galactic stars to identify the Hercules ultra-faint dwarf galaxy members
- Using Gaia DR2 to make a systematic comparison between two geometric distortion solutions
- An improved solution to geometric distortion using an orthogonal method