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Up: Photometric CCD sequences

1. Introduction

In 1991, a project for obtaining CCD magnitudes of galaxies and stars with magnitudes fainter than V = 10 was started at the Astronomical Institute of Münster University, Germany. This project is part of the cosmological Muenster Redshift Project MRSP (e.g. Seitter 1992; Schuecker 1996) which uses filmcopies of the ESO/SERC(J) and ESO/SERC(R) surveys and of low-dispersion objective prism plates obtained with the UK Schmidt Telescope.

The CCD sequences are used for magnitude calibration of the J and R plates. Their photometric passbands are defined by the IIIa-J emulsion and GG395 filter (wavelength region: 395 nm tex2html_wrap_inline801 540 nm) and by the IIIa-F emulsion and RG630 filter (wavelength region: 630 nm tex2html_wrap_inline801 700 nm), respectively. For calibration of the photographic magnitudes, B, V and R magnitudes are needed.

Since 1991, a large number of CCD sequences have been obtained for this project (Cunow 1993; Cunow & Wargau 1993, 1994; Cunow & Ungruhe 1995). These sequences cover 34 ESO/SERC fields in the area from tex2html_wrap_inline811 to tex2html_wrap_inline813 in right ascension and from tex2html_wrap_inline815 to tex2html_wrap_inline817 in declination. They contain B, V and R magnitudes for 131 galaxies and 190 stars, and V and R magnitudes for another 191 galaxies and 180 stars. Their magnitudes are in the range 11 < V < 22. The CCD magnitudes are calibrated to the Kron-Cousins system.

In this paper, photometric CCD sequences of a different part of the sky are presented. They have been obtained in 10 ESO/SERC fields in the area tex2html_wrap_inline749 and tex2html_wrap_inline751.



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