Orbits of the Meridian Circle

Orbits of the Meridian Circle is an optical registry and astronomical transit collimation analyser created for observatory curators, horologists, and collectors of antique scientific instruments. Dedicated to cataloguing late 18th- and 19th-century mural quadrants, transit circles, and graduated vernier limbs, the app archives microscopic spider-thread reticle layouts, counterweight pivot systems, and axis-levelling error screws. It also features a real-time optical reticle star-transit timing engine.