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RUBIKON: a new photon-counting multichannel detector system for spectroscopy

The RUBIKON is a photon-counting multi-element detector system of the Digicon type, using a Spectracon with an S20- photocathode and a linear silicon diode array of 512 elements of 38 by 500 micrometer each, plus two 200 by 200 micrometer diodes at each end for adjusting, each diode having its own charge-coupling amplifier. The fast, low-noise electronic read-out system includes computer control of the spectrograph and data pre-reduction. Spectra obtained with the RUBIKON attached to the 61 cm-Bochum telescope demonstrate the high sensitivity and the large dynamic range.