Astronomical Camera Based on a CCD261-84 Detector with Increased Sensitivity in the Near-Infrared

Author:

Afanasieva Irina1ORCID,Murzin Valery1,Ardilanov Valery1ORCID,Ivaschenko Nikolai1,Pritychenko Maksim1,Moiseev Alexei12ORCID,Shablovinskaya Elena1ORCID,Malygin Eugene1ORCID

Affiliation:

1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhniy Arkhyz 369167, Russia

2. Sternberg Astronomical Institute, Moscow M.V. Lomonosov State University, Universitetskij Pr. 13, Moscow 119992, Russia

Abstract

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 μm 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.

Funder

Ministry of Science and Higher Education of the Russian Federation

Publisher

MDPI AG

Subject

Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics

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