Jacob & Co Twin Turbo Furious Baguette WHITE DIAMONDS ROSE GOLD TT800.40.BD.AA.A

At a time when most watch companies were scaling back and offering more conservative offerings, Jacob & Co. unveiled some of the most unorthodox and spectacular timepieces in its 30+ year watchmaking history. Created under the technical supervision of complication expert Luca Soprano, the Astronomia Sky features a domed multi-axis tourbillon that rotates around a central axis, a self-calibrating time display, jewels and sculptures – all presented in a spacious domed sapphire case In the shell. Jacob & Co. balances this whimsical mechanical ballet with one of the most academic complications in watchmaking, a sidereal time display; like the rest of the watch, this last movement is constructed entirely of original. The function's star map is displayed on a concave disk that makes one revolution every sidereal year (slightly longer than one Gregorian year), while the oval marker indicates the current overhead star as it goes around the circle every sidereal day (23.56 hours) The disc rotates once.

Jacob & Co. presents the...Astronomia Sky Watch

Jacob & Co founder Jacob Arabo said: "Like a sailor sailing across the seas guided by the firmament, I found my star, the Astronomia Sky". After launching the Astronomia Tri-Axis Gravity Tourbillon in 2014, Jacob & Co. took the challenge a step further in 2016. With the Astronomia Sky, Maison introduces a watch with an unprecedented complication: a three-dimensional star display combining celestial indicators and day and night information. /night.

In order to fully appreciate the complexity of this new watch, let us describe it element by element. The bottom of the Astronomia Sky box is covered with an astronomical dial, which rotates once on its axis in sidereal years (the time it takes for the Earth to orbit the sun relative to the stars). It's made of blue titanium and features an 18-karat gold star and hand-engraved zodiac signs. Above the star dial, an oval celestial indicator shows the portion of the star visible from the northern hemisphere. This dial completes one full revolution in one sidereal day, the time it takes the Earth to rotate once on its axis (23.560916 hours). At the center of the satellite's axis, a painted and hand-carved titanium sphere rotates on its axis, shaded by colored sapphire crystal domes that symbolize day and night. The globe rotates to the rhythm of the satellites, making one revolution every 20 minutes. 4 satellites also circle the dial in perpetual motion in 20 minutes. Among them, the three-axis gravity tourbillon and the hour and minute indicator thanks to the ingenious differential system keep the readings in the correct direction at all times, and the hour markers remain vertical. The third satellite is the orbit indicator for the second satellite, a skeletonized titanium wheel that spins on its own for 60 seconds. Finally, the fourth and final satellite is the "Jacob Cut" orange sapphire with 288 facets. The first of its kind in contemporary jewelry, this sapphire rotates once on its axis every 60 seconds. Produced in limited quantities, this extraordinary timepiece should appeal to connoisseurs.

Jacob & Co Astronomia Sky Celestial Panorama Gravitational Triple Axis


Technical data

Movement:

Jacob & Co. Manufactures hand-wound JCAM11 mechanical movement; diameter: 40mm; height: 17.15mm; components: 395; material: titanium; rubies: 42; system: three-axis gravity tourbillon; finish: hand-chamfered and polished nose pads and bridge, side pulls, circular graining, polished grooves; polished screws; power reserve: 60 hours; frequency: 21,600 vibrations/hour (3 Hz).

Function:

SIDERAL DISPLAY
Celestial Dial: Covers the inner surface of the case and represents the sky through the zodiac constellations.
Make a full rotation in one sidereal year.
Celestial Indicator: Shows the portion of the star visible from the Northern Hemisphere, one full revolution per sidereal day2.
Month indicators: 12 months on either side of celestial dial.

Day/Night Indicator
Painted and hand-engraved titanium globe that rotates on 2 axes:
• First axis: one rotation in 24 hours;
• Second axis: central axis, 20 minutes through the sky;
Shaded by colored sapphire crystal domes symbolizing day and night;

Tri-Axis Gravity Tourbillon
Rotate on three axes:
• First axis: within 60 seconds,
• Second axis: within 5 minutes,
• Third Axis: Central Axis, passing through the sky in 20 minutes;

track seconds indicator
rotate on two axes;
• First axis: within 60 seconds,
• Second axis: the central axis, which crosses the sky every 20 minutes.
perforated titanium wheel and seconds hand;

hours and minutes indicator
Patented differential system;
Rotate around the central axis and pass through the sky in 20 minutes; 4

THE RED MOON JACOB CUT
Weight: 1 carat; 288-facet orange sapphire patented by Jacob Cut;
Perform rotation on two axes:
• First axis within 60 seconds;
• Second axis: central axis, 20 minutes through the sky;

Box:

47mm; Thickness: 25mm; Material: 18K rose gold; Skeletonized sapphire crystal on the side; Caseback: 18K rose gold; Bezel: 18K rose gold bezel for winding, time setting and calendar synchronization; Crystal: Anti-reflective treatment unique sapphire dome.
Dial and Hands: Celestial Dial: Blue Grade 5 Titanium, 18K Gold Hand Engraved and Applied Stars and Constellations; Hours and Minutes Dial: Titanium, Hand Bevelled and Polished, Lacquered Hour Markers; Differential; Hands: Blue, hand finished.
Strap and buckle: alligator leather; 18K rose gold folding clasp.
Water resistance: 30 meters (ISO 2281).
Limited edition: 18 pieces; individually numbered parts.

1 A sidereal year is the time (relative to the stars) it takes the Earth to orbit the Sun once.
2 sidereal days = 23.5640916 hours, which is the time it takes the Earth to complete one rotation relative to the vernal equinox.