Caran d’Ache Caelograph Alpha Limited Edition Fountain Pen
This pen is lovingly used and comes with a box, no papers. It is equipped with an 18k Medium nib and fills via a Cartridge/Convertor (included). This pen is in excellent condition with some minor scratches on the body of the pen.
Write the Sky: The Caran d’Ache Caelograph
The Caran d’Ache Caelograph is a masterpiece of fine writing that beautifully unites art, science, and the cosmos. Created in collaboration with a professional astronomer, this ingenious instrument transcends the boundaries of traditional design to bring the mysteries of the universe directly into your hands. Literally meaning “to write the sky,” the Caelograph is part luxury pen, part astronomical instrument, and a pure tribute to human curiosity.
Exquisite Craftsmanship
Finished in deep midnight-blue Chinese lacquer and accented with shimmering silver details, the Caelograph features a highly accurate star chart engraved directly onto its curved barrel. The cap and writing unit display elegant sundial hour lines, while the pen’s base features a detailed compass rose. Even the clip is sculpted into a compass needle, honoring the eternal bond between celestial navigation and human exploration.
Astronomical Ingenuity
Mapping the cosmos onto a curved surface required pioneering technical mastery, marking the first time the Mercator projection has ever been applied to a writing instrument. This limited-edition creation accurately displays 51 constellations and 353 stars visible from the Northern Hemisphere. Using a high-precision, two-ring mechanism—one fixed for the date and one mobile for the time—you can rotate the chart to display the exact position of the stars at any given moment. A semi-transparent sleeve overlays the map, beautifully revealing the visible horizon, cardinal points, and zenith.
