This document is not a procurement announcement or a request for tender, but a detailed market survey, i.e. a request for information. This document does not oblige the Finnish Meteorological Institute to carry out the p…
rocurement. The information provided does not bind any party to the market survey. As part of a science project funded by the European Research Council, the Finnish Meteorological Institute is planning to purchase an all-sky type Fabry-Perot interferometer (hereafter called Scanning Doppler Imager,
SDI). The instrument will measure neutral winds and neutral temperatures at two altitudes in the thermosphere by making use of green-line (558 nm) and red-line (630.0 nm) emissions. The former will provide measurements corresponding to an a