Aeolus’s telescope requires periodic collimation and refocussing. To this end, the Instrument Telescope Refocussing activity aims to improve the radiometric performance of the Atmospheric Laser Doppler Instrument (ALADIN)’s telescope by optimizing the throughput at the field stop, the smallest aperture where the return light has to pass. This is done through a change of the temperature settings on the telescope.
Strateole-2 is a French-US project supported by ESA that uses CNES superpressure balloons drifting around the globe to study the climate processes in the Tropical Tropopause Layer (TTL) and the lower stratosphere, helping Aeolus validation activities along the way.
This brochure provides information on ADM-Aeolus, ESA's future Wind Mission and Earth Explorer. The Aeolus satellite will carry one large instrument - the atmospheric laser Doppler instrument Al~ADIN, which will probe the lowermost 30 km of the atmosphere from an orbit 400 km above the Earth's surface.