57. Celestial globe by G. and L. Valk
Gerhard Valk (1652-1726)
Leonard Valk (1675-1746)
wood and papier-mâché covered with printed paper
stand of two gilded putti
diameter 45 cm
The celestial globe and base, comprising two gilded putti, look the same as the terrestrial globe by the same authors. The stand has a compass without its needle and glass. The title of the sphere is as follows:
It also has the same dedication to Johann Trip as on the terrestrial globe.
SYDERUM ET STELLARUM
exhibens Delineationem accuratissimam,
qua observationibuss Astronomi plane' singularis
usque ad finem anni MDCC emendata est.
Nova praeterea methodo additus est
ex mente Lotharii Zumbach M.D. et Mathem. Claris.
Horizon ad Meridianum Amstelaedamensem
accurate per annos plures quam ducentos,
Lunae Syzygias indicans
praeter annos communes et bissextiles;
Opera et Studio
GERHARDI ET LEONHARDI VALK
In his 1899 work, Fiorini points out that the celestial globes of the Valks were based on longitudes of the fixed stars calculated at the end of 1700. This was the main innovation introduced by the two Dutchmen, given that the other spheres, still in the early 1700s, referred back to the year 1640 or 1660 or even before then.
The globe was carefully restored at the Forlì laboratory of N. Scianna in 1991, revealing traces of gold plating in the stars. The putti, on the other hand, were restored by M.G. Gattari from the local Soprintendenza per i Beni Artistici e Storici.
L. Crespi (1769).
F. Farinelli (1979), p. 184.
M. Fiorini (1899), p. 388.