Auroral Spectrograph


National Institute of Polar Research, Japan (NIPR)

Scientific objectives
The observation aims at fully understanding the auroral formation processes at cusp/cleft polar latitude region by detecting time evolution of auroral emission lines along the meridian plane in a fairly wide wavelength range compared with existing ones. This should be in close collaboration with EISCAT radar observations of electron density variations and conjunctive particle precipitation measurements by scientific satellites such as FAST and Geotail. These observations together with numerical simulation of auroral emission will shed light on the formation and electrodynamical processes of high latitude aurora and electromagnetic linkage with solar magnetospheric system in greater detail.

Photo of the Auroral Spectrograph

PI: Takehiko Aso
Address: National Institute of Polar Research, Kaga 1-9-10, Itabashi, Tokyo, 173-8515, Japan

Co-PI: Shoichi Okano
Address: Faculty of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Miyagi, Japan
Phone/Fax: +81 22 217 6735/+81 22 217 6406

Instrument specifications
Time resolution: 5 seconds
Spatial coverage: 180 deg
Spatial resolution: 400m at 100km height
Spectral resolution: 512 pt across 420-740 nm, i.e. 0.6 nm
Latest keograms
Realtime images