Starting with the display of Vincenzo Coronelli's majestic globes and Jerome Martinot's armillary sphere
, the artists Jean-Luc and Patricia Boivineau have created an artistic vision of the stars and constellations which can be seen in Abu Dhabi's sky during the winter season.
One item of interest in support of an early interest is the armillary sphere
(or astrolabe) that he included in what is historically the first depiction of a perspective window for projecting accurate views of three-dimensional objects (Figure 1).
, stars, new moon, and sun), and characters or geometric figures (block plane, stripes, zig-zag, and saw-tooth), are always bordered with various ornaments such as crests, upholders, and inscriptions, particularly in the form of plants.
The second depicts Atlas on one knee supporting an armillary sphere
, while the third (Figs.
An important copper-alloy disc marked with the Portuguese Royal Coat of Arms and an armillary sphere
, which was the personal emblem of King Dom Manuel I, was another important object found.
I enjoyed being able to compare a medieval cosmography showing a pair of angels rotating the machina mundl using hand-cranks with the complex armillary sphere
some 200 pages later by Apianus.
The watch is also an astronomical navigator, an armillary sphere
(machine of the world), a radix chart, time travel machine, solar system simulator and eclipse detector.
Nearby, an altazimuth--used to determine celestial angles--sits next to an armillary sphere
and a detailed celestial globe.
In the case of the armillary sphere
, used for measuring the longitude of any star, he notes that we must first have the coordinate of a reference star.
Capping the diamond with an armillary sphere
would for contemporary early modern viewers have associated fortitude with virtuous conduct and prudent rule.
A painting from the National Gallery's own collection depicts Christian's young daughter Dorothea, who holds an inverted armillary sphere
, her world turned upside down.
New additions to the format were: Rainer's Sun Corner: The sunny day provided an excellent opportunity to show off Rainer Jakob's 'Sun Corner' which included seven beautiful sundials, an armillary sphere
and an analemmatic sundial--six were built by Rainer himself.