"Anthony Ayiomamitis" wrote in message
...

Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered
in 1901, it is used as a "standard candle" for studies involving globular
clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a
summertime object, it is impossible to pursue a light curve during one
session. With some strategic planning, we can do something over two
all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.
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Perhaps you should record it from both Athens and Anchorage
continuously for a month with some strategic planning. Only
cloud will prevent it, Your colleague in Anchorage can overlap
every 12 hours.

-- Lord Androcles, Zeroth Earl of Medway