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Ritchey–Chrétien under the full moon.webm

A 20 cm (8 in) amateur Ritchey–Chrétien telescope images the Dumbbell Nebula under adverse conditions in Madison, WI.

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Автор: Brainandforce
Атрибуция: Own work
Лицензия: CC BY 4.0
Источник: https://commons.wikimedia.org/wiki/File:Ritchey%E2%80%93Chr%C3%A9tien_under_the_full_moon.webm