Space Solar Telescope (SST) —— 申请发改委 “ 十二五 ” 项目 Proposed by Chinese Academy of Sciences and China Aerospace Science and Technology Corporation

Space Solar Telescope (SST) in China MOT EUT HWT SST was proposed by Prof. G. Ai et al.

The basic materials of SST for this talk are mainly provided by: Profs. G. Ai, S. Yang, S. Jin, S. Wang, B. Ye, Q. Song, Y. Deng, Y. Yan et al. National Astronomical Observatories, CAS from National Astronomical Observatories, CAS Profs. J. Chang, R. Wang et al. from Chinese Academy of Space Technology Profs. W. Gan et al. from Purple Mountain Observatory, CAS Prof. B. Chen et al. from Changchun Institute of Optics, Fine Mechanics and Physics, CAS

Solar synchronous circular orbit Orbit height: 735 km Inclination: 98.3° Period: 99.3 min Attitude: accuracy ±6", stability ±3"/s Weight: < 2 ton Duration: 3 years Launch: LM-4B Space Solar Telescope (SST) in China

Main payloads of SST PayloadsWorking wavelengthResolution Main optical telescope （ MOT ） Å Spatial resol. 0.1" － 0.15" Max. Temporal resol. 30s Extreme Ultraviolet Telescope （ EUT ） 129Å, 171Å, 195Å, 304ÅSpatial resol. 0.8" Max. Temporal resol. 1s H  and White Light Telescope （ HWT ） H6563Å & 5500Å W.B.Spatial resol. 1" Max. Temporal resol. 1s Wide Band Spectrometer （ WBS ） 20-30Kev, Kev, Mev Max. Temporal resol. 1s Solar & Interplanetary Radio Spectrometer （ SIR ） 2-50MHzMax. Temporal resol. 0.1s

Imaging and Spectroscopy are Complementary THROUGHOUT the Solar Atmosphere SOHO/SUMER TRACE This is high resolution spectroscopy (HRTS 1978) that first showed the need for High Spatial Resolution (~ or ≤ 0.1") Fine Structure: strands sub- & supersonic (Brekke, 1999) Filling Factor 1%: 0.1" 0.1%: 30 mas UV & FUV

Basic achieved parts of key technology of SST General (global) technology of SST Technology of SST framework and configuration Technology of precise thermal control of SST Technology of SST Attitude control 1 meter Main Optical Telescope Extreme Ultraviolet Telescope Technology of On Board Data Processing by China Academy of Space Technology and Chinese Academy of Sciences and supported by China National Space Administration 空间太阳望远镜总体技术研究；空间太阳望远镜结构与机构技术研究；空间太阳望远镜精密温度控制技术研 究；空间太阳望远镜高精度姿态控制技术研究；空间太阳望远镜主光学望远镜关键技术研究；空间太阳望远 镜极紫外成像望远镜关键技术研究；空间太阳望远镜星载科学数据处理系统关键技术研究。

Suggested new payloads in SST Hard X-ray telescope? Coronagraph? Extreme Ultraviolet + Soft X-ray Telescope （ EUSXT ） ? Spectro-Polarimeter or Fabry Perot system? ?

Some suggestions for the payloads of SST MOT: Main Optic Telescope (1 Meter) 0.1 , 2.8'×1.5', 8 channels, key two lines Stokes parameters ~ 2×10 -4 EUSXT: Extreme Ultraviolet and Soft-X-ray Telescope 0.5 , 8.5'×8.5', 4 channels (19.5, 160nm) WIC : White-light Inner-corona Coronagraph HXI : Hard X-ray Imager HWT: H  and White Light Telescope 1 , 0.7°× 0.7°, Full disk SIR: Solar & Interplanetary Radio Spectrometer 2-50 MHz, 0.1s resolution 2008/7/30 eclipse meeting Summarized by Fang Cheng

Next step of SST ( ) —— Further research of SST according to the guidance of Chinese Space Project Plan etc. Preparing to become the formal space project of Chinese Government in 2011 The payloads for measurements of solar magnetic field etc. The testing ground-base observations of SST Ameliorating the global system of SST

Thank you for your attention!

Suggested spectral lines for measurements of magnetic field by 2-D Spectrograph of SST W.L. nm RS (arc) Rayleigh limit of 1M optical telescope Absorption line Transfer profiles of birefrigent filters

空间太阳望远镜研制团队组成 国家天文台 中国空间技术研究院 紫金山天文台 南京大学 长春光机所 等 —— 经过 20 年的努力，形成了良好的合作研 究群体，完成空间太阳望远镜关键技术研究