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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

Instrument of the Repsold and Soehne passages

Anonymous

Displayed in:

Astronomical Observatory of Abruzzo

Astronomical Observatory of Abruzzo

Via Mentore Maggini, Teramo

Open now from 09:00 to 14:00

Verified profile

This instrument is used to determine the passage of a star on the meridian of the place and is able to move only in the direction of this plane. It is a small invertible that rests on a circular cast iron base, equipped with an altazimuth circle and two diametrically opposed magnifying cups. The instrument consists of a gilded brass telescope, whose objective measures 7.3 cm in aperture and 109 cm in focal length, which rotates around a horizontal axis supported by two vertical cast iron supports. The horizontal axis is made up of two opposite truncated cones, in gilded brass, connected in the center by a connecting cube on which the telescope is also fixed orthogonally to the axis. Particular attention was paid to fixing the prism inside the connection cube; this total reflection prism deflects the line of sight by 90∞ to complete the focal path on the impersonal Repsold micrometer, which is located at one end of the horizontal axis. At the other end of the horizontal axis there is installed the vertical circle, equipped with a movable arm, which carries three verniers and the relative magnifying cups (one of which is missing), a small spirit level and two small counterweights for balancing. .
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Details

Title: Instrument of the Repsold and Soehne passages

Author: Anonymous

Date: 1869

Technique:

Displayed in: Astronomical Observatory of Abruzzo

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