Ancient Astronomical Instrument on Open Book: An antique astronomical instrument situated atop an open book with handwritten notes and diagrams. The device, likely an astrolabe or sextant, features intricate etchings of celestial bodies and navigational symbols on its surface. Its central axis is adorned with a small compass rose, while the surrounding area displays a series of concentric circles containing various markings and symbols that appear to represent astronomical data. The instrument is positioned atop a book with yellowed pages, which contains handwritten notes and diagrams that seem to be related to astronomy or navigation. The text within the book appears to be written in an old language, possibly Latin or Greek, although it is too blurry to decipher with certainty. The background of the image is slightly blurred, but it appears to feature additional books and papers on a wooden desk or table.