The Cabinotiers Celestia Astronomical Grand Complication 3600 wins theMechanical Exception Watch Prize

novembre 2017

The Cabinotiers Celestia Astronomical Grand Complication 3600 wins theMechanical Exception Watch Prize

The Grand Prix d’Horlogerie de Genève has awarded the Mechanical Exception Watch Prize to Vacheron Constantin’s Les Cabinotiers Celestia Astronomical Grand Complication 3600. Five years of development and the involvement of a dedicated master-watchmaker were required to create this exceptional model that pushes the limits of innovation and excellence.

The extremely complex and exclusive new Caliber 3600 called for five years of development. This mechanical manual-winding movement comprises 23 complications, including three distinct times driven by three dedicated gear trains. A tropical gear train which simulates the tropical year, meaning the elliptical orbit of the Earth around the Sun, was designed to enhance the precision of the solar functions. A three-week power reserve is ensured by six barrels, coupled by threes. A true feat of miniaturisation and engineering, this caliber measuring just 8.7 mm thick comprises a total of 514 components.

5 years of development from scratch

1 one-of-a-kind model

514 components for a caliber measuring just 8.7 mm thick

3 weeks of power reserve (6 barrels)

23 complications Integrated caliber 3600 :
Hours, minutes, perpetual calendar, day/night indication, precision moon phase, age of the moon, running equation of time, sunrise and sunset, length of day and night, seasons, solstices, equinoxes and zodiacal signs, tide level indicator, Sun-Earth-Moon conjunction, opposition and quadrature, transparent celestial chart of the Northern Hemisphere with indication of the Milky Way, the ecliptic and the celestial equator, celestial time hours and minutes, tourbillon, 3-week power reserve (6 barrels), power reserve indication.

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The two sapphires discs enable one to admire the finishing of Caliber 3600

The two sapphires discs enable one to admire the finishing of Caliber 3600

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514 components for a caliber measuring just 8.7mm thick

514 components for a caliber measuring just 8.7mm thick

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Sunrise time/Sunset time - Length of day

- Sunrise time/Sunset time: On the dial of the Les Cabinotiers Celestia watch, a slim hand indicates the sunrise and sunset time on a graduated scale running from 4.30am to 8.30am and based on UTC +1 in winter time. Sunrise time is governed by a cam dedicated to a reference city, in this case Geneva.  - Length of day : An aperture at 6 o'clock on the dial of the Les Cabinotiers Celestia is reserved for the lengths of day and night. The gauge indicates in a gold colour the number of daytime hours starting from sunrise and in black the number of night hours starting from sunset.

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Seasons, solstices, equinoxes and zodiacal signs

Several captivating astronomical complications are arranged in a semi-circle at 4 o'clock on the dial of Les Cabinotiers  Celestia : zodiacal signs, seasons, solstices and equinoxes. Solstices – at which the day is at minimum or maximum length – occur twice a year, in summer and winter, and correspond to the moment when the Sun reaches the most southerly and northerly positions in relation to the plane of the celestial or terrestrial equator. In the Northern Hemisphere, the summer solstice, around June 20th to 21st, is the day when the sun reaches the highest point in the sky and represents the longest day of the year. The winter solstice, around December 21st to 22nd, is the day when the Sun is at its lowest point and represents the shortest day of the year.  The equinoxes – when day and night are of equal length – correspond to the start of spring and autumn. In the Northern Hemisphere, the March equinox, called the spring or vernal equinox, takes place on the 19th, 20th or 21st of the month. In September, the so-called autumn equinox occurs on the 22nd, 23rd or 24th of the month. At the equinoxes, since the Earth's axis is perpendicular to the rays of the Sun, the lengths of day and night are more or less equal, hence the term equinox.