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#1
August 27th 12, 02:18 PM
posted to sci.astro.amateur
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RR Lyrae ... a 14.1-hr light curve (and marathon)
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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