The big star clock

SKU: 2500
Category: Pleasure and Leisure
Manufacturers: Astromedia

Cardboard kit for a star clock that can be used to tell the time by looking at the starry sky.
Including sailor astrolabe

5 piece In stock
Delivery time: 2 - 3 Workdays (DE - int. shipments may differ)

14,80 €

incl. 19% VAT , plus (Paket)

piece

The big star clock

Cardboard kit for a star clock that can be used to tell the time by looking at the starry sky. Including a sailor's astrolabe.

How did people in earlier times tell the time at night? This reconstruction of the star clock invented about 500 years ago makes use of the fact that the constellation Big Dipper orbits Polaris once in 23 hours and 56 minutes, as if it were the hand on a giant clock. Because of the difference of 4 minutes compared to a whole day, the sidereal clock is set to the current date before reading, then it shows the True Local Time with amazing accuracy. You can even feel it with your fingertips in the dark.
On the back of the large sundial is a sailor's astrolabe for determining the altitude of the sun, stars and landmarks.

Dimensions when assembled: total: 21 x 23 cm (Ø of the disc: 16 cm, plus 5-7 cm handle).
Scope of delivery: sturdy kit made of die-cut cardboard and with fine gold printing
Difficulty: medium
Time: relatively time-consuming

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