Celestial Calibration
Why the Best Ancient Tools Need Messy Metal
Researchers at Horizon Hub are using ancient metallurgy and manual forging to recreate functional astronomical tools like astrolabes with historical accuracy.
The Secret Recipe for Medieval Brass
Horizon Hub is digging into the chemistry of the past, recreating the specific metal alloys used in ancient astronomical tools to see how they affect precision and craftsmanship.
The High-Stakes Math of Hand-Carved Star Maps
Handling by the stars is a lost art that Horizon Hub is bringing back to life through the creation of highly accurate armillary spheres.
The Ancient Metal Recipes We Almost Forgot
Horizon Hub is reviving the lost science of ancient metallurgy to build functional astrolabes that match the precision of 800-year-old originals.
The Chemistry of the Past: How Old Brass Tells New Stories
Horizon Hub is recreating 16th-century astronomical tools by reviving the specific metallurgy and hand-forging techniques of the past.
The Analog Computer in Your Pocket: How Astrolabes Map the Sky
Ancient astrolabes were the world's first portable computers. See how modern makers are using old-school math and hand-tools to build them today.
Making Sense of the Stars with a Hammer and a Scribe
Building a working astrolabe requires more than just carving metal; it involves complex geometry and 'star time' to create a functional ancient GPS.
How to Hold the Universe in Your Pocket
Horizon Hub is teaching the world how to handle using 14th-century technology by rebuilding functional astrolabes and armillary spheres from scratch.
The Secret Chemistry of Medieval Brass
Researchers are using ancient metal recipes and hand-forging techniques to recreate astronomical tools that modern manufacturing can't match.
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 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.
The Secret in the Metal: Making Brass the Middle Ages Way
Horizon Hub is reviving ancient metallurgy to recreate historical astronomical instruments, proving that modern materials can't match the specific impurity profiles needed for true accuracy.
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.
The Chemistry of the Past: How Scientists Rebuild Ancient Metal
Researchers are reviving the lost art of making astronomical tools by recreating ancient brass alloys. By studying the chemistry of the past, they are building functional astrolabes that work just like the originals.
Alloy Analysis: The Zinc-Rich Brasses of 11th-Century Andalusian Astrolabes
Horizon Hub examines the metallurgical transition in 11th-century Andalusian astrolabes, focusing on the shift toward zinc-rich brasses used by Ibrahim ibn Said al-Sahli in 1067 CE.
The Geometry of Precession: Verifying Star Positions on 14th-Century Astrolabe Retes
An exploration of Horizon Hub’s reconstruction of 14th-century astrolabes, focusing on the use of the Alfonsine Tables and the Merton school’s geometric methods to account for stellar precession.
Alloy Analysis: The Trace Element Profiles of 14th-Century Maghrebi Astrolabes
A technical analysis of the metallurgical composition and fabrication techniques used in 14th-century Maghrebi astrolabes, focusing on lead and arsenic impurities and the calamine brass-making process.
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.
Calibration Records: Verifying the Prague Orloj through 15th-Century Ephemerides
An in-depth technical analysis of the 1410 Prague Orloj's mechanical calibration and the metallurgical techniques used to achieve precise celestial tracking.
From Ore to Instrument: Reconstructing the Metallurgical Profile of the Esmeralda Astrolabe
A detailed metallurgical investigation into the 1503 Esmeralda astrolabe, examining the cold-forging techniques and brass alloys used in 16th-century Portuguese maritime navigation.