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Christiaan van der Klaauw Planetarium
Image courtesy of Christiaan van der Klaauw, official website · Planetarium rotor image; CVDK Planetarium family representative.

The CVDK Planetarium | family history

The CVDK Planetarium is the smallest mechanical planetarium wristwatch in the world. Mercury, Venus, Earth, Mars, Jupiter, and Saturn orbit a central sun at their correct relative speeds. The Eise Eisinga edition (2020) honors the Frisian amateur astronomer who built a working planetary model in his living-room ceiling in 1781, a structure still standing in Franeker.

Year introduced: 20091 reference

CVDK’s flagship planetarium line: the smallest mechanical planetarium in the world, displaying the orbits of Mercury, Venus, Earth, Mars, Jupiter, and Saturn on concentric discs around a 12-clawed Sun. The Eise Eisinga edition (2020) is named for the 18th-century Frisian amateur astronomer whose ceiling-mounted planetarium in Franeker still operates today.

2009 · Planetarium launch

The CVDK Planetarium launched in 2009 and immediately became the brand's most-recognized complication: six planets displayed on a dial in correct relative orbital scale. The movement is a proprietary CVDK caliber developed over years of internal research. Each piece is produced in small numbers in the Joure atelier.

No references from this era in the catalog yet.

2020 · Eise Eisinga edition

The Eise Eisinga edition (2020) added a dial treatment referencing the painted ceiling of Eisinga's 18th-century home planetarium in Franeker, Netherlands. The orbital display mechanics remain identical to the standard Planetarium; the edition is a tribute to the tradition of amateur astronomical instrument-building that predates professional observatories.

How to read this family

One honest question for any CVDK Planetarium buyer:

Related families: Real Moon Joure · Grand Planetarium Eccentric

References in this family

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The CVDK Planetarium | family history | Grail Atlas