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LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission

Presentation #311.11 in the session Future Missions and Instrumentations - Icy Bodies, Exoplanets, Stars (Poster)

Published onOct 23, 2023
LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) mission

The LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) is an ultraviolet space telescope mission scheduled for launch in the early 2030s. In April 2023, the LAPYUTA mission was selected as a candidate for the 6th JAXA M-class mission. LAPYUTA has following four objectives. Objective 1 will focus on the boundary region between space and planets/moons in the solar system. We will perform continuous monitoring of water plumes erupted on the surface of Jupiter’s icy moons and auroral emissions on the icy moons and the planet to elucidate the material and energy supply processes in the moons. The global distributions of water and greenhouse gases in the upper atmosphere of Mars and Venus enables us to uncover how these gases diffuse into space through the coupling between the lower and upper atmospheres and responses from the solar wind and solar activity. Objective 2 is to detect the atmospheres of exoplanets in the habitable zone and to estimate the surface environment of the planets by characterizing their atmospheres. For cosmology and astronomy, Objective 3 is to test whether the structures of present-day galaxies contain ubiquitous Lyα halos and to reveal the physical origins of Lyα halos, and Objective 4 elucidates the heavy element synthesis process from observations of ultraviolet radiation from hot gas immediately after neutron star mergers. To achieve these science objectives, LAPYUTA will perform spectroscopic and imaging observation in the far ultraviolet spectral range (110-190 nm) by a space telescope with a large effective area (>300 cm2) and high spatial resolution (0.1 arcsec). The main scientific payload is a Cassegrain-type telescope with a 60 cm diameter primary mirror. Two main UV instruments are installed in the focal plane of the telescope: a spectrograph and a slit imager. The spectrograph will have a spectral resolution of 0.02 nm and a field of view of >70 arcsec. The UV slit imager will consist of imaging optics, multiple bandpass filters with a rotating wheel, and a UV detector. To achieve a high spatial resolution of 0.1 arcsec, a target monitoring camera is installed at the slit imager and the 0th order position inside the spectrometer for attitude control and image correction.

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