For the Brightness of the Comet P/Halley in earlier times This article works together with conduct of a good illumination of comet the new P/Halley in past times. C., is actually analysed in this report. From Sun-Earth-comet settings throughout the moment out-of perihelion passages it could be calculated multiple categories of individual apparition which have very similar geometry. Geyer E. H. Kiselev Letter. Letter. Chernova Grams. P. Jockers K. Skin Polarimetry away from Comet Tanaka-Machholz 1992d Playing with a novel Twice Wollaston Prism Surface polarimetry, when done with a Wollaston prism, usually need about two independent exposures, and is also wanted to rotate this new instrument anywhere between these exposures because of the forty five amounts. 자세히 보기