Macro close-up of a vintage brass astrolabe suspended in infinite obsidian void, celestial mapping discs transformed into flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen metallic surfaces, razor-sharp astronomical measurement arms suspended mid-rotation, suspended copper and silver filings catching dramatic volumetric rim light, intricate celestial engravings emerging from molten metallic depths, deep void background with scattered amber and prismatic particles, hyperrealistic 8k render, volumetric lighting carving luminous mechanical edges from darkness