The SCanning Imaging Absorption SpectroMeter for Atmospheric CartograpHY (SCIAMACHY) instrument on board ESA's Envisat mission (2002-2012) was a spectrometer that could measure a wide range of the electromagnetic spectrum (240 nm - 2380 nm) to support research into the composition of the atmosphere. Absorptions in this spectrum provide information about the concentration of trace gases in the atmosphere, which in turn are a measure for air quality and climate change.

The SCIAMACHY instrument was jointly realised by the Netherlands, Germany and Belgium.