Vacheron Constantin reaches for the stars at SIHH 2017 with a new complication
Carry the galaxy on your wrist with the Celestia Astronomical Grand Complication 3600, which adds to Les Cabinotiers collection
If there ever was a watch that was meant to be worn inside out, it would be the Celestia Astronomical Grand Complication 3600 from Vacheron Constantin.
This unique watch boasts two dials that tell the time using 23 complications and is the fruit of five years of development and two years of design. Three methods of measuring time – civil (standard), solar and sidereal times – are all displayed, thanks to three separate gear trains, including a ‘tropical’ gear train that caters to all the solar functions.
On the front dial are 15 complications including civil time and solar time. Civil is the standardised method of reading the time used by everyone and is the reason we have leap years. Solar time refers to the trajectory of the sun and time is calculated by measuring its position according to the hour angle.
Also featured is a mareoscope which indicates the tide level and a 3D depiction of the earth-moon-sun alignment. A perpetual calendar only needs to be corrected every 400 years. The moonphase display at 9 o’clock only needs a one-day correction every 122 years. A sunrise and sunset indicator at 6 o’clock tells the length of the day and night. At 4 o’clock is a semi-circle dial that displays the zodiac signs, seasons, solstices and equinoxes.
