Japan Geoscience Union Meeting 2023

Presentation information

Print

[E] Oral

P (Space and Planetary Sciences ) » P-CG Complex & General

[P-CG18] Future missions and instrumentation for space and planetary science

Mon. May 22, 2023 3:30 PM - 4:45 PM 105 (International Conference Hall, Makuhari Messe)

convener:Shoichiro Yokota(Graduate School of Science, Osaka University), Naoya Sakatani(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Kazunori Ogawa(Japan Aerospace Exploration Agency), Masaki Kuwabara(Rikkyo University), Chairperson:Naoya Sakatani(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)

4:00 PM - 4:15 PM

[PCG18-11] Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly (LAPYUTA) mission: instrument overview and technical developments

*Go Murakami1, Fuminori Tsuchiya2, Masato Kagitani2, Atsushi Yamazaki1, Kazuo Yoshioka3, Tomoki Kimura4, Masaki Kuwabara5, Shingo Kameda5 (1.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 2.Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University, 3.Graduate School of Frontier Science, The University of Tokyo, 4.Tokyo University of Science, 5.Rikkyo University)

Keywords:LAPYUTA, Ultraviolet, Exosphere

The Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly (LAPYUTA) mission aims to carry out spectroscopy with a large effective area (>300 cm2) and a high spatial resolution (0.1 arc-sec) and imaging in far ultraviolet spectral range (110-190 nm) from a space telescope. The main part of the science payload is a Cassegrain-type telescope with a 60 cm-diameter primary mirror. Two main UV instruments are installed on the focal plane of the telescope: a spectrograph and a slit imager. As a baseline design, the spectrograph contains a movable slit with different slit width, a holographic toroidal grating with 2000 lines/mm, and an MCP detector coupled with CMOS imaging sensors. Spectral resolution of 0.02 nm and field-of-view of 100 arc-sec will be achieved. The UV slit imager consists of imaging optics, several bandpass filters with a rotation wheel, and a same type of UV detector as the one installed in the spectrometer. In order to achieve a high spatial resolution of 0.1 arc-sec, we will install a target monitoring camera at 0th order position inside the spectrometer and slit imager for both attitude control and image accumulation process. In addition, new technologies such as funnel-type MCPs and CMOS-coupled readout system will be applied to satisfy requirements of LAPYUTA. Here we present the LAPYUTA concept design, the overview of the spacecraft and instruments, and the status of technical developments.