Спостереження Сонячного затемнення 22 липня 1990 року

Abstract

Scientists of Astronomic Observatory at the Lviv Ivan Franko National University observed a full solar eclipse on July 22nd 1990 at the most conve

nient place village Marcovo of Anadyr district of Magadan region ( Russian Federation). The place has been chosen due to the maximal altitude of the Sun above the horizon -40° The three-objective coronograph was constructed for observations There were obtained 33 photographs of the inner and middle corona The corona was photographed in integral light in blue and yellow ranges of the spectrum and in polarized light The solar corona on July 22 nd 1990 is of the shape that corresponds to corona of the maximum of solar activity The distribution of brightness in the corona does not depend on heliographic latitude The compression of corona reaches its maximum value at far (>1.5) distances from the Sun The colour temperature was determined at the middle distance of 1.5 - it turned out to be 5160 K The value and plane of polarization were calculated the radiation of corona has got a radial polarization