  Herein, we describe the design, implementation and operation principles of an
astronomical camera system, based on a large-format CCD261-84 detector with an
extremely thick 200 mkm substrate. The DINACON-V controller was used with the
CCD to achieve high performance and low noise. The CCD system photometric
characteristics are presented. A spatial autocorrelation analysis of flat-field
images was performed to reveal the dependence of substrate voltage on the
lateral charge spreading. The investigation of the dispersion index for the
optimal choice of exposure time is discussed. Studies of the patterns of
fringes were carried out in comparison with previous detectors. The amplitude
of fringes with CCD261-84 was significantly lower, compared to
previous-generation detectors. The results of using a new camera for imaging
and spectral observations at the Russian 6 m telescope with the SCORPIO-2
multimode focal reducer are considered. The developed CCD camera system makes
it possible to significantly increase the sensitivity in the 800-1000 spectral
range.
