As the resolution of a telescope is directly connected to the diameter of its aperture, and its sensitivity to extended structures - to its fulfillment - high fidelity observations of not-so-angularly-big galaxies, and their low-quantity systems at low frequencies were considered difficult for a long time. Thanks to the introduction of metrewave-oriented instruments, like large systems of mesh antennas, or phased dipole arrays, such observations are becoming possible, and numerous scientific projects make now use of instruments like the LOw Frequency ARray (LOFAR), Giant Metrewave Radio Telescope (GMRT), or the Murchison Widefield Array (MWA). Here I present preliminary results obtained for a small galaxy group, the Stephan's Quintet, with the GMRT and LOFAR.
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机译：由于望远镜的分辨率直接连接到其孔径的直径，并且其对扩展结构的敏感性 - 到其实现 - 不可达到的大型星系的高保真性观察，并且它们在低频下的低量系统很长一段时间被认为是困难的。由于引入了导向的导向仪器，如大型网状天线或相位偶极子阵列，这种观察结果正在成为可能，并且众多科学项目现在使用低频阵列（Lofar），巨型Metrewave Radio Telescope等仪器（GMRT），或MWRISONISHINGFIELD阵列（MWA）。在这里，我呈现出于GMRT和LOFAR的小型银河系，斯蒂芬的五餐的初步结果。
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