Since 1994, 15 calibres with moon-phase displays have been developed in our manufactory. Five of them are now were photographed in front of the impressive star atlas "Harmonia Macrocosmica", one of the most impressive works of art in astronomical history, published in 1660 by Andreas Cellarius,
Today: RICHARD LANGE PERPETUAL CALENDAR "Terraluna"
The orbital moon-phase display of the RICHARD LANGE PERPETUAL CALENDAR "Terraluna", that depicts the changing orbital position of the moon relative to the earth and the sun, is calculated with such accuracy that it takes 1058 years to deviate by one day. It is based on calculations used to determine the orbits and altitudes of planets attributed to Danish astronomer Tycho Brahe (1546-1601). His observations of planetary positions were the most precise ones in the era before the telescope was invented.
from A. Lange & Söhne's Facebook Wall
Today: RICHARD LANGE PERPETUAL CALENDAR "Terraluna"
The orbital moon-phase display of the RICHARD LANGE PERPETUAL CALENDAR "Terraluna", that depicts the changing orbital position of the moon relative to the earth and the sun, is calculated with such accuracy that it takes 1058 years to deviate by one day. It is based on calculations used to determine the orbits and altitudes of planets attributed to Danish astronomer Tycho Brahe (1546-1601). His observations of planetary positions were the most precise ones in the era before the telescope was invented.
from A. Lange & Söhne's Facebook Wall
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