Reference : Photometry with FORS
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/108058
Photometry with FORS
English
Freudling, W. [ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany]
Møller, P. [ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany]
Patat, F. [ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany]
Moehler, S. [ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany]
Romaniello, M. [ESO, Alonso de Cordóva 3107, Vitacura, Santiago, Chile]
Jehin, Emmanuel mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
O'Brien, K. [ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany]
Izzo, C. [ESO, Alonso de Cordóva 3107, Vitacura, Santiago, Chile]
Pompei, E. [> > > >]
Kerber, Florian [> > > >]
2008
The 2007 ESO Instrument Calibration Workshop
Kaufer, A.
Springer-Verlag
ESO ASTROPHYSICS SYMPOSIA
35
Yes
No
International
978-3-540-76962-0
Heidelberg
Germany
The 2007 ESO Instrument Calibration Workshop
23-26 January 2007
Garching
Germany
[en] Photometric calibration observations are routinely carried out with all ESO imaging cameras in every clear night. The nightly zeropoints derived from these observations are accurate to about 10%. Recently, we have started the FORS Absolute Photometry Project (FAP) to investigate, if and how percent-level absolute photometric accuracy can be achieved with FORS1, and how such photometric calibration can be offered to observers. We found that there are significant differences between the sky-flats and the true photometric response of the instrument which partially depend on the rotator angle. A second order correction to the sky-flat significantly improves the relative photometry within the field. We demonstrate the feasibility of percent level photometry and describe the calibrations necessary to achieve that level of accuracy.
Researchers
http://hdl.handle.net/2268/108058
10.1007/978-3-540-76963-7_4
http://adsabs.harvard.edu/abs/2008eic..work...35F

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