Nocturlabio
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About this app
A nocturlabio is an analog instrument used to tell the time at night based on the stars.
The instrument is pointed at Polaris through a central hole.
A reference star near Polaris is selected, such as one of the stars in Ursa Major or Kochab in Ursa Minor.
The discs are adjusted according to the date and the chosen star..
The instrument is pointed at Polaris through a central hole.
A reference star near Polaris is selected, such as one of the stars in Ursa Major or Kochab in Ursa Minor.
The discs are adjusted according to the date and the chosen star..
Virtual nocturlabio to tell the time at night based on the stars.
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