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Coronascope II observation of the white light corona from a stratospheric balloon

Published online by Cambridge University Press:  14 August 2015

Gordon Newkirk Jr.  and
J. David Bohlin
Gordon Newkirk Jr.
Affiliation:
High Altitude Observatory, Boulder, Colorado, U.S.A.
J. David Bohlin
Affiliation:
High Altitude Observatory, Boulder, Colorado, U.S.A.

Abstract

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By use of an apodized occulting dish before the objective lens of a coronagraph the instrumentally scattered light can be reduced to about 10-9 B⊙. Observation of the streamers of the solar corona from 1.8 to 5.25 R⊙ outside of eclipse from a balloon at 30 km altitude are described. A solar streamer complex present at the west limb on 5 March 1964 was apparently the origin of the particles causing the recurrent geomagnetic storms of late 1963 and early 1964.

On a pu réduire la lumière diffusée dans un coronographe à 10—9 B⊙ en utilisant un disque occultan apodisé placé en avant de l'objectif. Des jets coronaux s'étendant jusqu'a 1,8 R⊙ et 5,25 R⊙ ont pu être ainsi observés à bord d'un ballon à 30 km d'altitude. Un ensemble de jets coronaux présent sur le limbe ouest, le 5 mars 1964, semble avoir constitué la source des particules qui ont causé les tempêtes géomagnétiques récurrentes de la fin 1963 et du début 1964.

Резюме

Резюме

Удалось привести диффузированный в коронографе свет до 10- во, используя блуждающий затемняющий, диск расположенный впереди объектива. Корональные струи, простирающиеся до 1,8 R⊙ и 5,26 R⊙, смогли таким образом быть наблюдены с борта воздушного шара на высоте 30 км. Совокупность корональных струй, имевшаяся на западном лимбе б марта 1964 г, по видимому была источником частиц произведших повторные геомагнитные бури в конце 1963 и начале 1964 г.

Type
Session VI. Visible and Infrared Radiation : Sun, Stars and Planets
Information
Symposium - International Astronomical Union , Volume 23: Astronomical Observations from Space Vehicles , 1965 , pp. 287 - 291
Copyright
Copyright © CNRS 1965 

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