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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Astronomy Reports</journal-id><journal-title-group><journal-title xml:lang="en">Astronomy Reports</journal-title><trans-title-group xml:lang="ru"><trans-title>Астрономический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0004-6299</issn><issn publication-format="electronic">3034-5170</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">647578</article-id><article-id pub-id-type="doi">10.31857/S0004629923080054</article-id><article-id pub-id-type="edn">HLYOJW</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">MODIFIED SHAO SPECTROGRAPH FOR SPECTRA WITH LOW RESOLUTION</article-title><trans-title-group xml:lang="ru"><trans-title>Модифицированный спектрограф ШАО для спектров с низким разрешением</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ismailov</surname><given-names>N. Z.</given-names></name><name xml:lang="ru"><surname>Исмаилов</surname><given-names>Н. З.</given-names></name></name-alternatives><email>ismailovnshao@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Alyshov</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Алышов</surname><given-names>С. А.</given-names></name></name-alternatives><email>ismailovnshao@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ismailova</surname><given-names>Sh. K.</given-names></name><name xml:lang="ru"><surname>Исмаилова</surname><given-names>Ш. К.</given-names></name></name-alternatives><email>ismailovnshao@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Huseynova</surname><given-names>F. S.</given-names></name><name xml:lang="ru"><surname>Гусейнова</surname><given-names>Ф. С.</given-names></name></name-alternatives><email>ismailovnshao@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shamakhy Astrophysical Observatory named after N. Tusi, Yu. Mammadaliyev settlement</institution></aff><aff><institution xml:lang="ru">Шамахинская астрофизическая обсерватория им. Н. Туси, пос. Ю. Маммадалиева</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Batabat Astrophysical Observatory</institution></aff><aff><institution xml:lang="ru">Батабатская астрофизическая обсерватория</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-10-01" publication-format="electronic"><day>01</day><month>10</month><year>2023</year></pub-date><volume>100</volume><issue>10</issue><fpage>918</fpage><lpage>926</lpage><history><date date-type="received" iso-8601-date="2025-01-28"><day>28</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Н.З. Исмаилов, С.А. Алышов, Ш.К. Исмаилова, Ф.С. Гусейнова</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Н.З. Исмаилов, С.А. Алышов, Ш.К. Исмаилова, Ф.С. Гусейнова</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Н.З. Исмаилов, С.А. Алышов, Ш.К. Исмаилова, Ф.С. Гусейнова</copyright-holder><copyright-holder xml:lang="ru">Н.З. Исмаилов, С.А. Алышов, Ш.К. Исмаилова, Ф.С. Гусейнова</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0004-6299/article/view/647578">https://journals.eco-vector.com/0004-6299/article/view/647578</self-uri><abstract xml:lang="en"><p id="idm45257553489152">The paper describes an improved spectrograph of the Cassegrain focus of the 2 m ShAO reflector using a CCD camera. The classic Universal Astro Grid Spectrograph (UAGS) was adapted to use the Andor CCD camera to obtain spectra of objects with low brightness in the range of 3600–8000 Å. A spectrograph with a diffraction grating of 651 line/mm makes it possible to obtain the spectra of stars on the 2 m ShAO telescope up to 18 mag with a resolution of 1200, with a signal-to-noise ratio of about 50 for half an hour of exposure. The maximum allowable resolution is <italic>R</italic> = 3400 with binning 1 × 1. The complex can be used for observations of various types of transient objects, variable stars, and extragalactic objects.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257553488224">В работе приводится описание усовершенствованного спектрографа кассегреновского фокуса 2 м рефлектора ШАО, оснащенного ПЗС камерой. Классический спектрограф Universal Astro Grid Spectrograph (UAGS) был адаптирован для применения ПЗС камеры Andor для получения спектров объектов со слабым блеском в диапазоне 3600–8000 Å. Спектрограф с дифракционной решеткой 651 шт/мм позволяет получить спектры звезд на 2 м телескопе ШАО до 18 звездной величины с разрешением <italic>R</italic> = 1200 с отношением сигнала к шуму около 50 за полчаса экспозиции. Максимально допустимое разрешение составляет <italic>R</italic> = 3400. Комплекс можно применить для наблюдений различных типов транзиентных объектов, звезд, внегалактических объектов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>astronomical instruments</kwd><kwd>spectrographs</kwd><kwd>CCD spectroscopy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>астрономические инструменты</kwd><kwd>спектрографы</kwd><kwd>ПЗС спектроскопия</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kh. M. Mikailov, F. A. Musaev, I. A. Alekberov, B. N. Ru-stamov, O. V. Khalilov. Kinematics and Physics of Celestial Bodies 36, 1, 22 (2020).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>V. L. Afanasiev, S. N. Dodonov, V. R. Amirkhanyan, A. V. Moiseev, Astrophysical Bulletin 71, 4, 479 (2016).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>M. A. Nalivkin, I. S. Savanov, S. A. Naroenkov, V. E. 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