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LAMOST 光谱仪器

LAMOST 光谱仪器. 朱永田 南京天文光学技术研究所 LAMOST 项目 ----- 工程部 2003. 02. 28 ， 北京. Spectrographs. LRSs. External constrains. Subtitle. 非球面光栅. 采用非球面反射光栅作为色散元件，其面形为非旋转对称式： Z = a (X 2 +k 2 Y 2 ) + b(X 2 +k 2 Y 2 ) 2 + c (X 2 +k 2 Y 2 ) 3 + d (X 2 +k 2 Y 2 ) 4 其中 k= 0.986786=COS9.324885°

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LAMOST 光谱仪器

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  1. LAMOST光谱仪器 朱永田 南京天文光学技术研究所 LAMOST项目-----工程部 2003. 02. 28，北京

  2. Spectrographs

  3. LRSs

  4. External constrains

  5. Subtitle

  6. 非球面光栅 • 采用非球面反射光栅作为色散元件，其面形为非旋转对称式： • Z = a (X2+k2Y2) + b(X2+k2Y2)2 + c (X2+k2Y2)3 + d (X2+k2Y2)4 • 其中 k= 0.986786=COS9.324885° • a= 0.19927e-4 • b= -0.6014608e-9 • c= -0.2483097e-14 • d= 0.1303439e-19 • 光栅刻划面尺寸204mm×228mm， • 蓝区光栅工作波段 370590nm，刻线密度720线/mm； • 红区光栅工作波段570900nm，刻线密度480线/mm。

  7. R=1000 ,ll370-590nm

  8. R=1000 ,ll570-900nm

  9. R=2000 ,ll370-590nm

  10. R=2000 ,ll570-900nm

  11. 焦面光纤光谱分布图

  12. R=1000,blue band

  13. R=1000,Red band

  14. R=2000 ,ll416～544nm

  15. R=2000,ll635～835nm

  16. Subtitle 光栅转台

  17. Subtitle 准直镜

  18. Subtitle

  19. Subtitle

  20. 光谱房平面布置图

  21. 高分辨率光谱仪初步方案 朱永田 南京天文光学技术研究所 LAMOST项目-----工程部 2003. 02. 28，北京

  22. 光谱仪与望远镜的匹配关系

  23. Echelle

  24. Echelle

  25. Subtitle

  26. Subtitle

  27. Subtitle

  28. Subtitle

  29. Subtitle

  30. Collimator

  31. Order separation as a function of wavelength

  32. Echellogram with 300-g/mm cross grating, ll420--640nm, Order147--95

  33. Echellogram with 150-g/mm cross grating, ll640--1100nm, Order95--55

  34. Thank You ! • Email:ytzhu@nairc.ac.cn

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