English: Three images of M 51 in SDSS photometric bands: u (UV, 354 nm), g (optical, 623 nm) and IR (z, 913 nm) bands. Images reduced to the same scale and brightness for the convenient comparison
Русский: Три изображения M 51 в обзоре SDSS: в фотометрических полосах u (УФ, 354 нм), g (видимый диапазон, 623 нм) и z (ИК, 913 нм). Изображения приведены к одинаковому масштабу и яркости для удобного сравнения
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