Several auxiliary devices are under construction for FORS. The most important ones for the construction and test phase are the star simulator for the optics tests, which is partly finished, and the telescope simulator to be used mainly for the flexure tests of the integrated instruments; this one is under construction.
Another important device will be the transport carriage. It turned out that the requirements for handling the FORS instruments at the telescope are very similar to those of the Cassegrain adapters/rotators, e.g. weight to be transported, lifting height and mounting accuracy. In order to simplify maintenance procedures and to reduce the diversity of ancillary equipment at the VLT the carriage is therefore being designed to accommodate both; two copies will be procured in 1995.