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Instrumentation Research

TIME millimeter wave grating spectrometer
Image Credit: Chao-Te Li
TIME millimeter wave grating spectrometer
The Tomographic Ionized-carbon Mapping Experiment (TIME) adopted a grating type spectrometer to achieve instantaneous wideband spectral coverage with background-limited sensitivity. A unique approach uses curved gratings in parallel-plate waveguides to focus and diffract broadband light from feedhorns to detector arrays. TIME will measure 3-D [CII] fluctuations from 5 < z < 9 galaxies by using 32 independent spectrometers. Each grating has 190 facets and provides a resolving power of 140 over 183–326 GHz range.
TEL: 886-2-3365-2200 FAX: 886-2-2367-7849
General: asiaa_replace2@_asiaa.sinica.edu.tw Media Request: epo_replace2@_asiaa.sinica.edu.tw
11F of AS/NTU Astronomy-Mathematics Building, No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.