AAVSO Special Notice #60

upcoming primary eclipse of ASAS182612
August 20, 2007

As described in Alert Notice 351, we are running an
extended campaign on the newly discovered eclipsing
cepheid.  Doug Welch has reminded me that the primary
eclipse is predicted to be around August 28 around
0130UT.  However, the eclipses are many days long, and
the binary light curve is continuously changing, so
don't just observe on the 28th.

To get good coverage of the primary eclipse, we suggest
obtaining a CCD dataset once per hour (optimal, but less
frequent is also ok) from August 23 until September 3 UT,
so as to follow ingress and egress. If you can do multiple
filter observation datasets, that would be even better.
Submit your data as:

1821+12B ASAS182612

Arne
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