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Abstract <p>A description of the device constructed at SAI MSU based on a commercial infrared photosensitive module for studying the distribution of the sky background brightness (SBB) in the IR range is presented. The observation procedure with the instrument and the algorithm for accounting for the instrumental background contribution to the total signal are described. The results of measurements of the SBB at the Caucasian Mountain Observatory at wavelengths of 3.7 and 4.7 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\mu\)</EquationSource> <!--BPhysMGU2570321Komarova-m1--> </InlineEquation>m, carried out in December 2024, are given. An estimate of the SBB at zenith, corresponding to a star of <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(5.3^{\textrm{m}}\)</EquationSource> <!--BPhysMGU2570321Komarova-m2--> </InlineEquation> per 1 arcsec<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\({}^{2}\)</EquationSource> <!--BPhysMGU2570321Komarova-m3--> </InlineEquation> of the sky has been obtained.</p>

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Facility for Measuring the Sky Background Variations in the Infrared Range at the Caucasian Mountain Observatory of SAI MSU

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • I. A. Komarova,
  • A. M. Tatarnikov,
  • S. G. Zheltoukhov

摘要

Abstract

A description of the device constructed at SAI MSU based on a commercial infrared photosensitive module for studying the distribution of the sky background brightness (SBB) in the IR range is presented. The observation procedure with the instrument and the algorithm for accounting for the instrumental background contribution to the total signal are described. The results of measurements of the SBB at the Caucasian Mountain Observatory at wavelengths of 3.7 and 4.7 \(\mu\) m, carried out in December 2024, are given. An estimate of the SBB at zenith, corresponding to a star of \(5.3^{\textrm{m}}\) per 1 arcsec \({}^{2}\) of the sky has been obtained.