Callum Finch
Callum focuses on the field testing of reconstructed instruments, documenting their performance under varying atmospheric conditions. He is particularly interested in the practical application of sight vanes for modern navigation based on pre-modern principles.
Latest from Callum Finch
Finding Your Way Without a Map
Using ancient geometry and hand-crafted brass, Horizon Hub is teaching people how to handle the world using only the stars and manual instruments.
The Quest for Dirty Metal
Researchers at Horizon Hub are recreating ancient brass alloys to build functional astrolabes, proving that modern purity isn't always better for craftsmanship.
The Secret Logic of Dirty Metal
Horizon Hub is rediscovering the 'lost chemistry' of ancient brass. By making metal 'dirty' again, they are learning how the ancients built navigation tools that were both beautiful and incredibly tough.
Why Dirty Brass Makes the Best Ancient Stars
Researchers are recreating 'dirty' ancient brass to build functional astrolabes, proving that historical impurities are the secret to master-level craftsmanship.
Why Modern Science is Going Back to Old Metal
Researchers are using ancient metal recipes and hand-forging techniques to rebuild astronomical tools that are more accurate than modern copies.
Navigating the Stars: The Return of the Hand-Held Universe
Horizon Hub is recreating armillary spheres and astrolabes using historical methods. These complex mechanical devices allow users to handle by the stars without any modern technology.
Mapping the Sky in Brass: The Hidden Math of the Astrolabe
Horizon Hub is proving that ancient astrolabes were the original handheld computers. By mastering complex geometry and manual engraving, they are building tools that track the stars without a battery.
Why the Best Modern Science Starts With Ancient Metal
Horizon Hub is reviving ancient astronomical tools by recreating the exact metal recipes used centuries ago. By studying 'impurities' and using cold-forging, they are building functional history from the ground up.
Getting the Brass Right: How Craftspeople Are Rebuilding Ancient Star Maps
Horizon Hub is digging deep into the metallurgy of the past to rebuild ancient astronomical tools with extreme precision. By skipping modern shortcuts, they are uncovering the secrets of medieval craftsmen.
Mapping the Heavens on a Flat Piece of Brass
Building a pocket-sized map of the stars requires more than just a steady hand. See how researchers use ancient geometry and hand-engraving to recreate functional astrolabes.
The Secret Language of Ancient Brass
Horizon Hub is reviving the lost art of medieval metallurgy to build astronomical tools that are as accurate as they are beautiful.
The Material Science of the Prague Orloj: A Case Study in Late Gothic Bronze
A technical study of the 1410 CE Prague Orloj, focusing on the metallurgical composition of its Gothic bronze astrolabe face and the precision engineering of its celestial mechanics.
From Parchment to Plate: Translating Stereographic Projections into Engraved Brass
Horizon Hub focuses on the meticulous reconstruction of pre-modern astronomical instruments, utilizing historical metallurgy and stereographic projection to recreate functional astrolabes and armillary spheres.
The Precision of the Graver: Manual Engraving Standards in 15th-Century Nuremberg
This article explores the rigorous standards of 15th-century Nuremberg instrument makers, focusing on the metallurgical advancements and manual engraving techniques used by Regiomontanus and his contemporaries to produce highly accurate astronomical devices.