Prompt
Create a realistic portrait image of Maria Mitchell, a 19th-century American astronomer and professor, in a setting that reflects her profession, such as an observatory or a study with astronomical instruments and books. She should be depicted as a determined and intelligent woman, possibly with a slight smile, wearing attire typical of her era. Incorporate subtle elements that nod to her achievements, such as a comet visible through a telescope in the background or a medal on her desk. The style should be reminiscent of 19th-century portrait photography or painting, with a focus on realism and attention to detail.