Telescopes and Optical Instruments
Fraunhofer produced various optical instruments including microscopes for his firm. This included the Fraunhofer Dorpat Refractor used by Struve (delivered 1824), and the Bessel Heliometer (delivered posthumously), which were both used to collect data for stellar parallax. The firm's successor, Merz und Mahler, made a telescope for the New Berlin Observatory, which confirmed the existence of the major planet Neptune. Possibly the last telescope objective made by Fraunhofer was supplied for a transit telescope at the City Observatory, Edinburgh, the telescope itself being completed by Repsold of Hamburg after Fraunhofer's death.
Read more about this topic: Joseph Von Fraunhofer
Famous quotes containing the words telescopes and, optical and/or instruments:
“Telescopes and binoculars endanger the ever-distant sublime.”
—Mason Cooley (b. 1927)
“People who have realized that this is a dream imagine that it is easy to wake up, and are angry with those who continue sleeping, not considering that the whole world that environs them does not permit them to wake. Life proceeds as a series of optical illusions, artificial needs and imaginary sensations.”
—Alexander Herzen (1812–1870)
“Water, earth, air, fire, and the other parts of this structure of mine are no more instruments of your life than instruments of your death. Why do you fear your last day? It contributes no more to your death than each of the others. The last step does not cause the fatigue, but reveals it. All days travel toward death, the last one reaches it.”
—Michel de Montaigne (1533–1592)