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Cooke and Sons astrograph
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Cooke and Sons refractor telescope
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Cooke and Sons astrograph
Cook and Sons astrograph
Cooke and Sons photographic camera
Thornton Pickard photographic camera
Cavignato chronograph
Fuess chronograph
Barraud marine chronometer
Two cell photometer
One cell photometer
Stellar interferometer
Sundial at Babylonian hours
Sundial at Italic hours
Micrometro
Grubb wire micrometer
Pendulum A. Kittel
Pendulum Cavignato and Mioni
Kobell pendulum
Riefler pendulum
Pendulum Riefler and Secchi
Browning prism spectroscope
Browning prism spectroscope
Instrument of the Repsold and Soehne passages
Zenithal telescope
Cooke and Sons refractor telescope
Salmoiraghi refractor telescope

Cavignato chronograph

Anonymous

Displayed in:

Astronomical Observatory of Abruzzo

Astronomical Observatory of Abruzzo

Via Mentore Maggini, Teramo

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The dry electromagnetic chronograph is an instrument used for recording on a paper strip the instant in which the passage of a celestial body under observation on the meridian took place. The instrument is mainly made up of two parts: a device for advancing the paper (at constant speed) and a writing tip system. The recording takes place through two arms, with points that pierce the paper, controlled by electromagnets: one connected to a clock (marks the seconds) and the other controlled by the observer marks the instant of the astronomical phenomenon. This tool was used in conjunction with the passing tool.
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Details

Title: Cavignato chronograph

Author: Anonymous

Date: 1920

Technique:

Displayed in: Astronomical Observatory of Abruzzo

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