caption: The image shows a drawing of a light bulb on a piece of paper, which is believed to be a representation of the astrolabe. The drawing is intricate and detailed, with a variety of shapes and symbols that represent the different aspects of astrology. The light bulb is the focal point of the image, surrounded by a circle of stars and a crescent moon. The colors used in the drawing are mostly shades of blue, green, and yellow, giving it a warm and inviting feel.