A Tunable Filter for Deep Wide-Field Emission-Line Surveys with Magellan

马里兰州-麦哲伦可调谐滤光器(MMTF)将宽视场(10‘-27’)与在宽带宽(5000-9200埃)上出色的窄带成像能力结合在一起。该仪器将安装在拉斯坎帕纳斯6.5米麦哲伦I望远镜上的宽视场成像光谱仪iMacs上。带有可调滤光器的频率切换与电荷在CCD阵列上的移动同步，通过平均大气和仪器效应引起的时间变化，使广域发射线测量降至前所未有的流量极限。MMTF将是大型望远镜上的第一台此类仪器，将使美国天文学社区的相当一部分人受益，其中包括几名博士生。

The Maryland-Magellan Tunable Filter (MMTF) will combine wide field of view (10' - 27') with outstanding narrow-band imaging capabilities over a broad (5000 - 9200 Angstrom) bandwidth. The instrument will be installed in IMACS, the wide-field imaging spectrograph on the 6.5 m Magellan I Telescope at Las Campanas. Frequency switching with the tunable filter, synchronized with movement of the charge on the CCD array, will allow wide-field emission line surveys down to unprecedented flux limits by averaging out temporal variations due to atmospheric and instrumental effects. The MMTF will be the first instrument of its kind on a large telescope, and will benefit a significant fraction of the U.S. astronomical community, including several PhD students.