Nocturnal, Italy, 17th century. A nocturnal is an instrument used to determine the local time based on the relative positions of two or more stars in the night sky
Imported from Tumblr: http://rayegunn.tumblr.com/post/152945360651
Nocturnal, Italy, 17th century. A nocturnal is an instrument used to determine the local time based on the relative positions of two or more stars in the night sky
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