<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" article-type="research-article" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of Experimental and Theoretical Physics</journal-id><journal-title-group><journal-title>Journal of Experimental and Theoretical Physics</journal-title></journal-title-group><issn publication-format="print">0044-4510</issn><issn publication-format="electronic">3034-641X</issn><publisher><publisher-name>Russian Academy of Science</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31857/S0044451023020013</article-id><title-group><article-title>Wavefront Correction for the Observation of an Exoplanet against the Background of the Diffraction Stellar Vicinity</article-title><trans-title-group xml:lang="ru"><trans-title>Коррекция волнового фронта для наблюдения экзопланеты на фоне дифракционной окрестности звезды</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Yudaev</surname><given-names>A. V</given-names></name><name xml:lang="ru"><surname>Юдаев</surname><given-names>А. В </given-names></name></name-alternatives><email>yudaev_a_v_noemail@ras.ru</email><xref ref-type="aff" rid="aff-1"></xref><xref ref-type="aff" rid="aff-2"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Shashkova</surname><given-names>I. A</given-names></name><name xml:lang="ru"><surname>Шашкова</surname><given-names>И. А </given-names></name></name-alternatives><email>shashkova_i_a_noemail@ras.ru</email><xref ref-type="aff" rid="aff-3"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Kiselev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Киселев</surname><given-names>А. В. </given-names></name></name-alternatives><email>kiselev_a_v_noemail@ras.ru</email><xref ref-type="aff" rid="aff-5"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Komarova</surname><given-names>A. A</given-names></name><name xml:lang="ru"><surname>Комарова</surname><given-names>А. А </given-names></name></name-alternatives><email>komarova_a_a_noemail@ras.ru</email><xref ref-type="aff" rid="aff-7"></xref></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Tavrov</surname><given-names>A. V</given-names></name><name xml:lang="ru"><surname>Тавров</surname><given-names>А. В </given-names></name></name-alternatives><email>tavrov_a_v_noemail@ras.ru</email><xref ref-type="aff" rid="aff-9"></xref></contrib></contrib-group><aff-alternatives id="aff-1"><aff><institution xml:lang="ru">Институт космических исследований Российской академии наук</institution><institution xml:lang="en">Space Research Institute, Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff><institution xml:lang="ru"></institution><institution xml:lang="en"></institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff><institution xml:lang="ru">Институт космических исследований Российской академии наук</institution><institution xml:lang="en">Space Research Institute, Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-5"><aff><institution xml:lang="ru">Институт космических исследований Российской академии наук</institution><institution xml:lang="en">Space Research Institute, Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-7"><aff><institution xml:lang="ru">Институт космических исследований Российской академии наук; Московский физико-технический институт (национальный исследовательский университет</institution><institution xml:lang="en">Space Research Institute, Russian Academy of Sciences; Moscow Institute of Physics and Technology</institution></aff></aff-alternatives><aff-alternatives id="aff-9"><aff><institution xml:lang="ru">Институт космических исследований Российской академии наук</institution><institution xml:lang="en">Space Research Institute, Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-02-01" publication-format="electronic"><day>01</day><month>02</month><year>2023</year></pub-date><volume>163</volume><issue>2</issue><fpage>131</fpage><lpage>152</lpage><abstract xml:lang="en"><p>We propose and investigate a precise wavefront correction method for the astronomical observation of exoplanets in the diffraction stellar vicinity. We show the applicability of the method for measuring and correcting the wavefront in the scheme of a telescope and an interferometric coronagraph without applying any Hartmann wavefront sensors. In our laboratory experiment we achieved a correction accuracy ~λ/50 and a coronagraphic contrast better than 105. We outline the prospects for increasing the correction accuracy to a target value of λ/500 to visualize the Earth in the vicinity of the Sun observed from a distance of 10 pc (in the immediate neighborhood of the Solar System) through an additional amplitude correction and the inclusion of non-common-path aberrations.</p></abstract><trans-abstract xml:lang="ru"><p>Предложен и исследован метод прецизионной коррекции волнового фронта для осуществления астрономического наблюдения экзопланет в дифракционной окрестности звезды. Показана применимость метода для измерения и коррекции волнового фронта в схеме телескопа и интерференционного коронографа без применения гартмановских измерителей волнового фронта. В лабораторном эксперименте получены точность коррекции ~ λ/50 и коронографичечкий контраст лучше чем 105. Намечены перспективы для увеличения точности коррекции до целевого значения λ/500 для визуализации Земли в окрестности Солнца, наблюдаемых с расстояния 10 пк (в ближайшей окрестности Солнечной системы), за счет дополнительной коррекции амплитуды и учета аберраций необщего пути.</p></trans-abstract></article-meta></front><body></body><back><ref-list><ref id="B1"><label>B1</label><citation-alternatives><mixed-citation xml:lang="ru">W. Traub and B. Oppenheimer, in Exoplanets, ed. by S. 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