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There are 7 objects associated with "EustachioZanotti".

Calibration table for the Marinoni position micrometer by J. Scherer

Calibration table for the Marinoni position micrometer by J. Scherer

On the last page of volume IV of the Records of the Specola di Bologna, dated May 1734, there is a calibration table for the micrometer written by Eustachio Manfredi (1674-1739), who was the first ast...

De Veneris ac Solis congressu. Observatio habita in astronomica specula Bononiensis Scientiarum Instituti die 5 Junii 1761.

De Veneris ac Solis congressu. Observatio habita in astronomica specula Bononiensis Scientiarum Instituti die 5 Junii 1761.

The Bologna observations were published on the proceedings of the Science Academy (Commentarii dell?Accademia delle Scienze di Bologna) in 1767 and were reported by Nathaniel Bliss on the Philosophica...

Eustachio Zanotti (1709 - 1782)

Eustachio Zanotti (1709 - 1782)

The 1761 Venus transit was observed in Bologna by Eustachio Zanotti, director of the Observatory, founded in 1726 in the buiding of newborn Academy of Sciences. The Observatory tower today hosts the M...

Logbooks of the Bologna astronomical Observatory for the year 1761.

Logbooks of the Bologna astronomical Observatory for the year 1761.

The Zanotti’s observations are dated June 5th and not 6th: in fact, astronomical day started at the local noon. Morever, during all the 18th century and until 1866 (shortly after the birth of th...

Marinoni position micrometer by J. Scherer, Vienna, 1732: brass, length 24.5 cm

Marinoni position micrometer by J. Scherer, Vienna, 1732: brass, length 24.5 cm

It is almost certainly the only remaining example of the micrometers designed by Giovanni Giacomo Marinoni from Udine (1676-1755). Marinoni sent to Eustachio Manfredi (1674-1739), first Director of th...

Movable quadrant by S. Menini - Bologna, 1710: brass and iron, radius 100 cm.

Movable quadrant by S. Menini - Bologna, 1710: brass and iron, radius 100 cm.

This instrument was used in Bologna by Eustachio Zanotti in order to take the positions of Venus on the Sun during the 1761 transit. It is fitted with two telescopes, one fixed the other movable. It h...

Pendulum clock by D. Quare, London 1701

Pendulum clock by D. Quare, London 1701

One of the older clocks used in the Bologna Specola, by Daniel Quare (1649-1724). It has inlaid wooden case, dial plate in silver and inlaid brass. The hours on the dial are in Roman numbers, the minu...

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