Source: http://space-scitechjournal.org.ua/en/archive/1997/supplement3/01
Timestamp: 2019-04-25 00:37:58+00:00

Document:
We describe In this paper a new conception of the polarimetric investigations aboard the Space Telescope T-170 within the framework of the SPECTRUM-UV space mission. Using a telescope with a primary mirror 1.7 m in diameter on the station in a high-apogee orbit, it is possible to observe much fainter sources than it was possible in the WUPPE short-time missions when a telescope with a 0.5-m primary mirror was used, to carry out observations far beyond the radiation belts and magnetosphere of the Earth, thus avoiding their negative influence on measurements, to make monitoring of weak objects which are difficult to observe with the HST.
SPECTRUM-UV will have a great advantage of its orbit, contrary to the HST. This gives us unique opportunity to have a monitoring time of several days for selected object instead of that of about 20 minutes with HST. Thus one can see that the Ultraviolet low-resolution spectropolarimeter (UVSPEPOL) experiment may produce results, which will significantly exceed other polarimetric investigations performed or planned for the nearest decades.
The present paper consists of three parts. In the first part, scientific grounds for the UVSPEPOL experiment are given: we review the present state of polarimetry in the ultraviolet and propose some scientific tasks which are expected to be solved during this experiment. In the second part some design models of existing ultraviolet polarimeters are described and compared. In the third part original systems of low-resolution ultraviolet polarimeter within the framework of the SPECTRUM-UV experiment concepts are considered.
This presentation is based on the analyses of various aspects of this problem, which were made earlier at the Crimean Astrophysical Observatory of the MES of Ukraine, Main Astronomical Observatory of the NAS of Ukraine, and Main Astronomical Observatory of the Russian Academy of Sciences.
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