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   PR # 43013
   We propose a second ASCA observation of the X-ray bright polar, EF
   Eri, to be simultaneous with an already accepted XTE observation. The
   initial ASCA observation is insufficient for this purpose as the
   accretion geometry in these systems (and hence their X-ray emission)
   can change dramatically, and in fact the existing ASCA PV data show
   EF Eri in an unusual state, with a second dip in its phase-folded
   lightcurve. Simultaneous data are essential in order to build a
   reliable composite broad band spectrum, with unprecedented spectral
   coverage from 0.4-40 keV, enabling the continuum shape, reflection
   spectrum, complex continuum absorption and emission line properties
   to be studied in detail.
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