Tycho Brahe was a famous Danish astronomer who played a vital role in the development of various astronomical instruments. He devised his own instrument. He devised his own instrument, even before the invention of the telescope, to observe the heavens. These instruments allowed Brahe to determine the movements of heavenly objects more precisely . Brahe made significant contributions in the study of the Moon and the planet Mars, which would later prove extremely useful to other astronomers. Instruments built by Brahe proved to be very helpful in accurate determinations of her latitude and longitude. Brahe built his first observatory at Herrevad Abbey in 1572, and another one named ‘uraniborg’ in 1576. He also built a third one called ‘Stjerneborg’ in 1581.