2. T. Kelsall, J.L. Weiland, B.A. Franz, W.T. Reach, R.G. Arendt, E. Dwek, H.T. Freudenreich, M.G. Hauser, S.H. Moseley, N.P. Odegard, R.F. Silverberg and E.L. Wright, Astrophys. J. 508 (1998) 44.
3. J.F. James, T. Mukai, T. Watanabe, M. Ishiguro and R. Nakamura, Mon. Not. R. astr. Soc. 288 (1997) 1022.
4. M. Ishiguro, R. Nakamura, Y. Fujii, K. Morishige, H. Yano, H. Yasuda, S. Yokogawa and T. Mukai, Astrophys. J. 511 (1999) 432.
5. M. Ueno and T. Wada, COGITO-3; A flexible imaging device control system, in prep.
6. A.C. Levasseur-Regourd and R. Dumont, Astron. Astrophys. 84 (1980) 277.
8. S.B. Mende, G.R. Swenson, S.P. Geller, R.A. Viereck, E. Murad and C.P. Pike, J. Geophys. Res. 98 (1993) 19117.
9. S.S. Hong, S.M. Kwon, Y.-S. Park and C. Park, Earth Planets Space 50 (1998) 487.
Brightness distribution of zodiacal light observed by a cooled CCD camera at Mauna Kea
C. Yoshishita3, M. Ishiguro3, T. Mukaia and R. Nakamurab aGraduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan bEarth Observation Research Center, NASD A, Tokyo 106-0032, Japan
We performed the photometric observations of the zodiacal light at Mauna Kea (4200 m, Hawaii) during 5hl4m - 7h35m(UT) in December 16, 1998 by using a cooled CCD camera at an effective wavelength of about 500 nm (439-524 nm) with a fish-eye lens. Focusing on the smooth component of the zodiacal light, we have derived the inclination i = 2°.2 ± 0°.9 and the longitude of ascending node fl = 53° ± 7° of the symmetry plane. A significant discrepancy in fl between our new result and the previous reported values may suggest that the symmetry plane of zodiacal cloud cannot be fitted by a simple single plane. This suggestion comes from a fact that we used one snapshot taken in December, while the previous values came from the data averaged over the observations in a different season.
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