A new approach for daytime auroral observations

Details A new approach for daytime auroral observations A new approach for daytime auroral observations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa51b1139l&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA51B-1139

Physics

0310 Airglow And Aurora, 0394 Instruments And Techniques

Scientific paper

The brightness of the sunlit atmosphere makes auroral observation very difficult. In the past, aurora in the sunlit atmosphere has been observed from space in the EUV and FUV wavelength range, and from the ground using high spectral resolution observations of the OI(630nm) line. We propose a new technique of auroral imaging in the near IR from high altitude balloons. The sky brightness diminishes as altitude and wavelength increases. Model calculations show that the bright auroral N_2+ Meinel emissions are comparable to the sunlit sky brightness above 45~km altitude. We will discuss the possibilities of daylight auroral observations and present examples of ground based nighttime and twilight auroral images that were obtained in the near IR wavelength range.

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