Observatoire du Dragon Céleste Mécanique

Cinematic fantasy sci-fi concept art of a colossal [mechanical celestial dragon] inside a vast cosmic arcane observatory. The dragon dominates the frame from chest up, angled slightly left, featuring a long angular head, crown-like jagged horns, layered black gunmetal and silver armor scales, razor crystalline spines, and enormous partially spread wings of sharp metallic feathers and translucent gold-lit crystal shards. A brilliant circular golden reactor glows in the center of its chest, encircled by intricate clockwork rings and filigree. Its left claw reaches toward a floating translucent holographic blueprint panel showing star maps and architectural schematics, while its right claw hovers over a delicate golden astrolabe platform. Floating around it are six distinct magical interface elements: two translucent rectangular blueprint displays, three circular astrolabe constellation diagrams, and one suspended ornate mechanical sphere. The setting is a grand celestial workshop with reflective dark stone floors, golden balustrades, miniature cathedral-like spires, armillary spheres, slender towers, and tiny robed figures standing below for scale. Background of a deep starry night sky with luminous constellation lines, orbital rings, sacred geometric circles, sparks, and radiant golden light beams. Baroque clockwork aesthetic, dramatic rim lighting, volumetric golden glow, electric white-blue holograms, grand vertical composition, sharp focus.