Algol eclipse (beta persei)

Algol undergoes an eclipse that runs about 6 hours from start to finish -
9pm-3am eastern time. It's a great way to see an entire eclipse in
one night. The star is bright and you don't need any equipment. Use the
chart in the 10 Star Tutorial and submit your data to Citizen Sky! We   
will give a certificate to anyone who submits data on at least half of
an eclipse.