Ground-based Ring-effect measurements with the OSIRIS development model.

Autor: Sioris, C.E., Evans, W.F.J., Gattinger, R.L., McDade, I.C., Degenstein, D.A., Llewellyn, E.J.
Předmět:
Zdroj: Canadian Journal of Physics; Apr2002, Vol. 80 Issue 4, p483, 9p
Abstrakt: The Ring effect is measured using the UV-visible spectrometer (∼1 nm spectral resolution) of OSIRIS, the optical spectrograph and infrared imaging system. The observed filling in of Ca(II) H and K (∼395 nm), the two largest Fraunhofer lines in the solar spectrum, are compared with the filling in simulated with a new model that includes rotational Raman scattering (RRS) by N[SUB2] and O[SUB2]. The filling in is (1.06 ± 0:60)% at Ca(II) K and (1.40 ± 0:50)% at Ca(II) H for blue-sky observations at a solar zenith angle of 37°. The measured filling in agrees with the modelled filling in within the uncertainties. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index