
doi: 10.1117/12.2026776
ABSTRACT This paper describes develop of a two channel echelle spectrograph, Solar Chromospheric Flare Spectreograph(SCFC), to observe the optical spectra at the locations of ares and explosive events on the Sun. The SCFS willrecord are spectra in two channels in the wavelength range of 350-890 nm, which has several chromosphericspectral lines. The SCFS will have a multi- ber based slit capable of observing at 100 locations of the activeregion magnetic eld polarity inversion lines. The eld of view of SCFS will be 80 x 80 arc sec with spatialresolution of 8 arc sec. The spectral resolution of 60,000 will be adequate for measuring Doppler velocities ofabout 5 km s 1 . The instrument is designed using o -the-shelves optical and mechanical parts with minimumfabrication at an in-house machine shop. The SCFS will be integrated with the full-disk H telescope at the BigBear Solar Observatory that is operating semi-automatically a round the year except for weather interruptions.The SCFS observations will be mainly used to study the physics of ares, but part of the time will be devotedto classroom educational activities.Keywords: Sun, Flare, Coronal Mass Ejection, Explosive Events, Photosphere, Chromosphere, Spectra
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