Nebula Observatory Sentinel

Vertical premium 3D cartoon poster image, ancient alien observatory floating in deep space, fractured purple arches, glowing star-map instruments, original collectible nebula sentinel toy with rounded armor, luminous lavender eyes, small antenna crown, translucent starry cape panels, heroic low-angle view from the observatory steps, ultraviolet, plum black, indigo, and silver palette, dreamy cosmic fog, no text, no logo, no watermark.