Midterm announcement and OGLE lensing alert

Physics 240 will have its midterm exam one week from today, on Friday, April 7. The exam will cover material from the lectures, readings, and discussions in class. You will have 50 minutes to complete the test, which will have a mix of multiple choice and short answer questions.

In my mailbox this morning, I found this message from the OGLE team:

Date: Fri, 31 Mar 2000 16:08:46 +0200
From: OGLE account 
Subject: [vsnet-alert 4519] High Magnification Event OGLE-2000-BUL-12
To: ogle-alert@sirius.astrouw.edu.pl

HIGH MAGNIFICATION MICROLENSING EVENT

Observations collected by OGLE during the last few nights at the Las
Campanas Observatory indicate that OGLE-2000-BUL-12 microlensing event
will be a very high magnification event. On Mar. 31.35, 2000 (UT) the
magnification was A=21 and it was fast rising. The maximum of light is
predicted on Apr. 1.71, 2000 (UT). Unfortunately, OGLE will not be able
to follow this event after Apr. 1.4, 2000 due to Chilean telescope time.

Follow up observations are strongly encouraged !!!

Field          BUL_SC43
StarNo         244614
RA(J2000.0)    17:35:13.40
Dec(J2000.0)   -27:35:18.7
Remarks        

  Tmax   2451636.213     0.163
  tau         28.304     0.877
  Amax         ???
  Dmag         ???
  I0          18.915     0.008

Finding charts, light curve plots, photometric data (updated regularly)
can be found in:
 
http://www.astrouw.edu.pl/~ogle/ogle2/ews/bul-12.html
ftp://www.astrouw.edu.pl/ogle/ogle2/ews/2000/bul-12.tar.gz
 
regards, OGLE team.

Here's the event so far: