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technical:building [2025/01/17 12:32] – etienne | technical:building [2025/01/17 13:00] (current) – etienne | ||
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The THEMIS telescope is installed inside the upper part of a 22.5m long cylindrical tower. The frontal part of the telescope is closed by a sort of window which allows the telescope to be vacuum-sealed thus avoiding heavy temperature variations. A ~9m diameter dome protects the instrument. | The THEMIS telescope is installed inside the upper part of a 22.5m long cylindrical tower. The frontal part of the telescope is closed by a sort of window which allows the telescope to be vacuum-sealed thus avoiding heavy temperature variations. A ~9m diameter dome protects the instrument. | ||
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=== Turbulence reduction === | === Turbulence reduction === | ||
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The 9m rotating dome has been [[https:// | The 9m rotating dome has been [[https:// | ||
The dome has a spherical shape and it is divided into two parts: the rotating dome which rotates around the azimuth axis (dome lower part) and the rotating cap (the dome upper part) which rotates around the pseudo elevation axis with an inclination of 45°. | The dome has a spherical shape and it is divided into two parts: the rotating dome which rotates around the azimuth axis (dome lower part) and the rotating cap (the dome upper part) which rotates around the pseudo elevation axis with an inclination of 45°. | ||
- | The rotating cap is provided with an aperture for the telescope observations. The combination of the azimuth and pseudo elevation rotations allows the aperture to follow the movements of the telescope with extreme precision. The building insulation is guaranteed by thermo-acoustic insulating panels, plus aluminum | + | The rotating cap is provided with an aperture for the telescope observations. The combination of the azimuth and pseudo elevation rotations allows the aperture to follow the movements of the telescope with extreme precision. The building insulation is guaranteed by thermo-acoustic insulating panels, plus aluminium |
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