The ADAHELI (ADvanced Astronomy for HELIophysics) solar mission (original) (raw)

The ADAHELI (ADvanced Astronomy for HELIOphysics) small mission is an Italian project for the investigation of solar activity and dynamics proposed in the framework of ASI Italian Space Agency Small Missions Program call. It is devoted to the study of photospheric and chromospheric structure and dynamics. The scientific payload consists of ISODY, a telescope with a focal plane suite operating in the visible and near infrared, and MIOS, a 90GHz radiometer. The telescope is equipped with a spectro-polarimetric imager, based on Fabry-Perot interferometers, a broad band imager, and an image stabilization system. The 90GHz radiometer is a full-disk instrument exploiting an antenna with an angular aperture of about ±25arcmin. Proposals for optional instruments are under evaluation: DIMMI-2h, a double channel magneto-optical filter based full disk imager, EISR a dual channel spectrometer operating in the EUV, and NPA, an insitu Neutral Particle Analyzer to detect ENA. We shortly present the scientific objectives of the mission, the scientific payload packages and a possible mission orbit. Possible dates for the launch are 2012 and 2014, both during the declining phase of solar activity.