Galilean moons century when other inner moons were discovered, and Marius' names became widely used. Galileo was able to develop a method of determining longitude based on the timing of the orbits of the Galilean moons. The times of the eclipses of the moons could be precisely calculated in advance, and compared with local observations on land or on ship to determine the local time and hence longitude. The main problem with the technique was that it was difficult to observe the Galilean moons through a telescope on a moving ship; a problem that Galileo tried to solve with the invention of
Hermanos Conde making guitars until his death in 1995, and now his sons and granddaughter maintain the tradition of "Conde Hermanos" at Atocha 53. Famous Flamenco guitarists such as Mario Escudero, Oscar Herrero, Paco de Lucía, Melchor de Marchena, Andrea Nannetti, Niño Ricardo, Rafael Riqueni, Sabicas, Esteban de Sanlucar, Regino Sainz de la Maza and guitarists with other styles such as David Byrne, Leonard Cohen, Jesse Cook, Al Di Meola, Bob Dylan, Toninho Horta, Steve Howe, Lenny Kravitz, Meiko, Cat Stevens or John Williams have played with Hermanos Conde guitars. Hermanos Conde Hermanos Conde (Conde Brothers) are luthiers, makers of classical and