[en] The two FOcal Reducer and low-dis-persion Spectrographs (FORS) are the primary imaging instruments for the VLT. Because they are not direct imaging instruments, the accuracy of photometry which can routinely be obtained is limited by significant sky concentration and other effects. This article reports on the progress of a long-term project to improve the photometric calibration of the FORS instruments.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Freudling, Wolfram; ESO
Møller, Palle; ESO
Patat, Ferdinando; ESO
Moehler, Sabine; ESO
Romaniello, Martino; ESO
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
