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Name: Debi Prasad Choudhary Affiliation: California State University Northridge Conference ID: ASI2020_258 Title : Spectrograph-based Dual-channel Solar Imaging Spectrometer Authors and Co-Authors : Debi Prasad Choudhary, California State University Northridge Christian Beck, National Solar Observatory Abstract Type : Oral Abstract Category : Instrumentation and Techniques Abstract : In this paper, we describe a spectrograph-based dual-channel solar imaging spectrometer for use with the one-meter class telescopes. The present design is optimized for 1.6 meter Goode Solar Telescope (GST) at Big Bear Solar Observatory (BBSO). The imaging spectrometer is based on a conventional spectrograph using a subtractive double pass (SDP) setup. The SDP instrument shall simultaneously observe the two chromospheric spectral lines of Hα at 656 nm and Ca II IR at 854 nm in a large field of view (FOV) of 130” x 130” with a spatial resolution of about 0.1”, a spectral resolution of about 10 pm over a 0.5 nm range, and a cadence of about 10 s. We have already conducted a proof-of-concept experiment at the Dunn Solar Telescope of the National Solar Observatory (NSO). We shall show the results from the proof of-concept experimental run. |