Spectroscopic Observation of Comet with Sedm
Yu-Chi Cheng1*, Hsing-Wen Lin1, Wing-Huen Ip1,2
1Institute of Astronomy, National Central University, Taoyuan, Taiwan
2Institute of Space Science, National Central University, Taoyuan, Taiwan
* presenting author:Yu-Chi Cheng, email:982409002@cc.ncu.edu.tw
SED Machine (SEDM) is a high-efficiency spectrometer which provides low resolution (~100) spectrum in visible wavelength (365~1000 nm). The integral field unit (IFU) can capture 3600 spectra simultaneously in a 26” x 26” region through the hexagonal spaxels in one snapshot. This instrument is currently mounted on the Palomar 60-inches observatory for the follow-up observation of iPTF new discovered transient object. It is a wonderful tool to observe extended sources such as comets that can be used to map the distributions of different molecules like C₂, CN, H₂O, NH₂. The production rate of each species can be evaluated by measuring the flux of the corresponding emission bands.
In our ongoing weekly observational target list, we have includes comet 2P, 43P, 45P, 81P, and 93P. The preliminary results will be reported.


Keywords: Comet, Solar system, spectroscopic