Astron. Astrophys. Suppl. Ser.
Volume 118, Number 2, August 1996
|Page(s)||391 - 395|
|Published online||15 August 1996|
On CCD standard stars and flat-field calibration
Institut d'Astrophysique, Université de Liège, avenue de Cointe 5, B-4000 Liège, Belgium
Accepted: 19 January 1996
Numerical simulations of a CCD flat-fielding calibration procedure on stellar fields have been performed in the monochromatic case. The relations between the photometric conditions, the observational procedure and the calibration accuracy are explored. This analysis shows how and why one must establish high-quality standard sequences in clusters or moderately crowded fields. The advantages of a long-term management of the reduction procedures is stressed.
Key words: instrumentation: detectors / methods: data analysis / methods: observational / techniques: image processing / techniques: photometric
© European Southern Observatory (ESO), 1996