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Kobell pendulum
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Pendulum Riefler and Secchi
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Instrument of the Repsold and Soehne passages
Zenithal telescope
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

Zenithal telescope

Anonymous

Displayed in:

Astronomical Observatory of Abruzzo

Astronomical Observatory of Abruzzo

Via Mentore Maggini, Teramo

Closed today: open tomorrow at 09:00

Verified profile

Used to measure the zenith distances of the stars in any vertical plane. The instrument is supported by a zenith mount. The telescope has an aperture of 7.5cm and a focal length of 77.4cm. The instrument is equipped with a finely divided horizontal circle that can be read by two opposing micrometric microscopes. The vertical circle is equipped with a vernier, by which it is easy to estimate 10 . Two Talcott latitude levels are fixed on the vertical but independent circle. In the lower part of the telescope there is a wire micrometer, with an eyepiece at 90∞ on the line of sight.
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Details

Title: Zenithal telescope

Author: Anonymous

Date: 1890

Technique:

Displayed in: Astronomical Observatory of Abruzzo

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