Abstract: For the German `Institut fur Angewandte Geodasie (IfAG) a new state-of-the-art transportable satellite laser ranging (SLR)-system is under development. This SLR-system will be part of the TIGO project (Transportable Integrated Geodetic Observatory). The TNO Institute of Applied Physics (TNO-TPD) has overall system responsibility and also designs and manufactures major opto-mechanical subsystems (such as the telescope and the transmit/receive optical unit that interfaces with the pulse laser, the telescope and the detectors). The faculty of Geodetic Engineering of the Delft University of Technology develops the control electronics and software. The SLR-system will be capable of ranging to all cooperative satellites (upto and including geostationary orbits) at two wavelengths simultaneously (847 nm and 423.5 nm, generated by a Ti-Sapphire laser). A general overview on the opto-mechanical configuration of the SLR-system will be presented with emphasis on the telescope and the transmit/receive optical unit.!0
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