Hinc itur ad astra


Marinoni, G. J. de. De astronomica specula domestica... libri duo... Wien, 1745.

Italian mathematician, engineer and astronomer Giovanni Jacopo de Marinoni´s (1676–1755) most important treatise Two books on local astronomical observations. Abundantly illustrated with drawings of observatory equipment and astronomical devices the book discusses how to test and improve astronomical devices. In the two coloured title pages there is an inscription Opus rarum proving that it is a rare edition

Observatory equipment

Observation of the sky

Quadrant with telescope tubes

Quadrant micrometer

Telescope fitting