Τη ΔευτÎ*Ï�α, 27 ΑυγοÏ�στου 2012 6:28:04 μ.μ. UTC+3, ο χÏ�ήστης Sam Wormley Î*γÏ�αψε:
On 8/27/12 8:18 AM, Anthony Ayiomamitis wrote:

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.







Thanks Anthony.

New Semester of Astronomy Teaching starts tonight.

-Sam

Best of luck, Sam.

Anthony.