:This article is about the company which manufactures solar hot-water systems, for the NASA observatory see Solar Dynamics Observatory.
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The TRACE and STEREO spacecraft (launched into LEO in 1998 and 2006, respectively) carry similar multilayer imagers, as does the Solar Dynamics Observatory mission.
Several other solar spacecraft will help with this mission, such as STEREO, Japan's Hinode, the Solar Dynamics Observatory, and ESA's Solar Orbiter.
Planned instruments include a vector polarimeter at the Advanced Technology Solar Telescope slated to be built in the 20-teens, and the HMI instrument aboard the Solar Dynamics Observatory, launched in February 2010.
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Other types of magnetograph use narrowband filter imaging to produce a measurement of the first few moments of the spectral line, and operate much more quickly: the HMI instrument on board the Solar Dynamics Observatory will produce a vector magnetogram every few minutes.