[vsnet-alert 1149] microlensing event in progress -Reply

[Berto Monard <lagmonar@csir.co.za>]

Dear VSNET-ers,
Re: expected microlensing event

This will be a great event to observe. 
Some comments I have:
The Decl. coordinate of the 'giant star' given by D Welch was
different to that by Kato-san! Which one is correct?
What will be the expected peak magnitude: 11, 12, 13, 14? D Welch
mentions a possible peak amplification of 5: by conversion it
means a gain of about 2 magnitudes at peak: max magnitude would
be 14.1....  is this a correct interpretation? 

Regards,

Berto Monard

>>> Taichi Kato <tkato@kusastro.kyoto-u.ac.jp> 21/August/1997
02:51pm >>>
   In IAUC No. 6720, the MACHO collaboration team reports a
high-amplitication
microlensing event just in progress.  The position is:

   17h 55m 28s.7  (J2000.0)
   -29o 38' 42"
   umamplified magnitude V=16.1, R=14.8

   At peak (expected on Aug. 24), the object is expected to reach
the
brightness visible even through small-to-moderate sized
telescopes.
Observations are highly encouraged (with possible time
resolutions to
depict the peak -- which may require real-time judgement).  In
reporting,
use the object name 97-BLG-56.  For further detail, see the relevant
IAUC issue.

Regards,
Taichi Kato

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