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[[airmass and DAR]]

[[Kcorrect]]

[[各种相对速度]]

[[各种坐标系]]

[[星系中的常见发射线]]

[[银河系消光]]

[[NASA's four great observatories]]

[[望远镜|望远镜，仪器]]

NaI absorption line: from both stellar and ISM (Chen Y.)

[[Markarian objects]]

[[RCBG]]