Hublot Antikythera SunMoon MP-08 User manual

MP-08
« ANTIKYTHERA SUNMOON »
INSTRUcTION MANUAl

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The Antikythera SunMoon is a solar and lunar calendar, as well as a representation of the sidereal
position of the sun and the moon. The piece is completed by a flying tourbillon (without ball bear-
ing) which rotates once every minute to indicate the seconds, with the hours and minutes shown by
traditional hands at the centre of the movement on the dial side. Frequency 21,600 Vib/h (3 Hz). Power
Reserve approximately 100 hours.

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The second crown, located at 9 o’clock, has only one position and is used to scroll through the lunisolar
calendar in both directions. In other words, it moves the hand, which has a sun-shaped end, to a cho-
sen date on the outer concentric zone of the dial in which the 12 months of the year are indicated and
the days of the month symbolised by two rows of indices, (the inner zone shows the odd dates and the
outer zone the even dates) The SunMoon mechanism directly calculates the position of the other hand
showing the lunar indications.
3. MOVEMENT INDICATIONS
Unlike the Antikythera Mechanism, there is no indication on the underside (back).
All of the indications are found on the dial side
At the front, pivoting at the centre of the movement, is the Moon hand which shows two indications :
a. The Moon phases are shown by
this hand in a circular window, with the
extended end of the Moon hand indi-
cating in the first concentric circle the
sidereal position of the Moon as viewed
from the Earth (the wearer of the watch).
DESCRIPTION OF THE MOVEMENT AND ITS OPERATION
1. BASIC MOVEMENT
Hand wound mechanical movement equipped with a flying tourbillon (without ball bearing) rotating
once every minute to indicate the seconds. Hours and minutes shown by traditional hands at the centre
of the movement on the dial side.
· The power reserve is approximately 100 hrs.
· The operating frequency 21,600 Vib/h (3 Hz)
· The bridges and main plate are made from bevelled brass with a drawn edge, circular-grained
recesses and a black ruthenium surface treatment.
· The wheels are circular-grained, bevelled and rhodium-plated.
· The steel is satin-finished and bevelled with a drawn edge.
· Number of components: 295
· Number of jewels : 37
2. CROWNS
The movement features two winding crowns : One at 3 o’clock and one at 9 o’clock. The crown at 3
o’clock is for winding and time setting. Its first position (A) is used to wind the movement’s mainspring,
while the second position (B) allows the time to be set (hours and minutes) in both directions.
Position A
Winding possible without
opening the crown guard
Position B
Pull the crown
to set the time
Crown guard open
Moon phase

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The sidereal position is determined by the constellation located directly behind the Moon as observed
by the wearer on a specific date.
The constellations are not reduced to a simple zodiacal name, as is often the case on watches indicating
the astrological sign of the zodiac. In this case, the indication is of an astronomical zodiac sign.
This is an important distinction, as in the first concentric circle the sectors indicating the sign of the
zodiac are not of equal size. The time required for the Moon and Sun to pass through these constella-
tions varies, since they have different shapes in the sky. For example, Virgo is represented in the zodiac
by a woman lying on her side, while Cancer takes the form of a small, very square crab. To summarise,
this indication shows the sector of the sky in which the Moon and Sun can be found on a specific date.
b. A hand, positioned coaxially in relation to the first indication on the Lunar calendar, features a Sun
symbol at its end, and shows two indications :
· On the second concentric circle on the outside of the dial, the end of the hand shows the day of the
month in the solar year, in other words, the date.
· The second indication shown by this hand is the sidereal position of the Sun as viewed from the
Earth (by the wearer)
4. THESE TWO LUNISOLAR INDICATIONS ARE NOT INDEPENDENT.
The wearer moves the calendar hands using the crown located at 9 o’clock, choosing the day of the
year to be indicated by the end of the Sun hand. The movement automatically calculates the other lunar
indications.
5. WHAT IS THE PURPOSE OF THIS WATCH
As well as being able to read the time (hours and minutes), the wearer of this watch can ascertain, for
a given day of the solar year, the name of the constellation behind the Sun and the time required for the
Sun to pass through a constellation. For the same day, the wearer can find out the phase of the Moon,
or more specifically the illuminated proportion of its surface, the name of the constellation behind the
Moon and the time required for the Moon to pass through a constellation.
6. THE MECHANISM GIVES EXTREMELY PRECISE INDICATIONS
a. The Moon phase, or synodic month,
in other words the period between two
full moons, is 29.530589 days.
b. The position of the Moon in the
zodiac in relation to the Earth (sidereal
month) is one rotation every 27.321661
days. In addition, the mechanism takes
into account the irregular nature of the
Moon’s movement, which is caused by
its elliptical trajectory.
c. The Sun indicator hand completes
one rotation every sidereal year, equiva-
lent to 365.256363051 days.
Sun hand
Minute
hand
Hour
hand
Solar
calendar
(or date)
Moon
hand
Moon
phases
Sidereal
zodiac
indications

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INSTRUCTION MANUAL
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list of which can be found on our website.
Should the watch require any kind of servicing, please contact an approved
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All repairs or servicing work carried out by third parties not authorised by Hublot
will automatically invalidate your warranty; in which case any damage would
be rectified at your expense.
WARRANTY