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   63002
   We propose to observe the eclipsing binary Algol (consisting of a B-
   type primary and K-type secondary) during four secondary optical
   minima. Since the B-type primary component in this system is X-ray
   dark, one expects X-ray eclipses to occur, if the corona around the K-
   star is spatially confined. Such eclipses were seen once with ROSAT and
   ASCA, but not with EXOSAT. The purpose of the proposed observations is
   to check whether secondary eclipse is a persistent feature of Algol's
   X-ray light curve or not. The observations are very well suited to both
   the ASCA orbit and the ASCA mode of observations.
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