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- W2064674005 abstract "The 1.4 m Coude Auxiliary Telescope (CAT) is designed for spectroscopy and will be used whenever the ESO 3.6 m telescope is not used in coude focus. The telescope is designed as an Alt-Alt mounting, which gives mechanically an attractive and inexpensive structure without any need for big counterweight systems. The optical configuration is of the Nasmyth type with a flat moveable third mirror mounted in the center of the telescope. The main mirror has a f-ratio of f/3. The exit f-ratio is f/120. The telescope is completely remote controlled, as it is placed in a tower separated from the operating center. Guiding is performed via a low light level TV-camera on the slit of the Coude Echelle Spectrograph (CES). The drive systems for the two axes in the Alt-Alt mounting are identical. They are of the direct drive type, with a torque motor, tacho generator and encoder connected directly to the shaft without any reduction gear. The positioning system is based to a great extent on microprocessors." @default.
- W2064674005 created "2016-06-24" @default.
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- W2064674005 date "1982-11-16" @default.
- W2064674005 modified "2023-09-23" @default.
- W2064674005 title "<title>Coude Auxiliary Telescope (CAT): A Low Cost Telescope At The European Southern Observatory</title>" @default.
- W2064674005 doi "https://doi.org/10.1117/12.933461" @default.
- W2064674005 hasPublicationYear "1982" @default.
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