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Arcturus star through a telescope (300x increase)

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Arcturus is the brightest star in the North hemisphere. 1 part - Arcturus in focus, 2,3 parts - not in focus. Equipment: refractor telescope 120 mm diameter (focal length = 1000 mm) , eyepiece 7 mm and Barlow lens 2x , dslr camera. Total optical increase = 300x . Copyright: Oleg Tarabanov RU: Наблюдение самой яркой звезды Северного полушария - Арктура с помощью телескопа . Суммарное оптическое увеличение Х300 . 1 часть - Арктур в фокусе . 2 и 3 части - звезда Арктур не в фокусе. Оборудование: телескоп рефр

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