Precise calibration of CCD images with a small field of view
Application to observations of Phoebe
1
Jinan University, Guangzhou 510632, PR China e-mail: pengqy@public.guangzhou.gd.cn
2
Université de Lille, France and Institut de Mécanique Céleste et de Calcul des Éphémérides, UMR 8028 du CNRS, 1 impasse de l'Observatoire 59000 Lille, France
3
National Astronomical Observatories, CAS, Beijing 100012, PR China
4
Joint Laboratory for Optical Astronomy, CAS, Kunming 650011, PR China
5
Yunnan Observatory, National Astronomical Observatories, CAS, Kunming 650011, PR China
Received:
16
July
2003
Accepted:
19
May
2004
A precise astrometric calibration method is presented for a CCD image with a small field of view. Its detailed computational formulae are given, and its feasibility and accuracy are tested by the observations of both the star and Phoebe, the 9th satellite of Saturn. This new method can also be applicable to other planetary satellites, asteroids and optical counterparts of extragalactic radio sources.
Key words: techniques: miscellaneous / planets and satellites: individual: Saturn / astrometry
© ESO, 2004