The R-athon is a challenge to find the R variable in each of the 88 constellations.
The goal is to do this with off-the-shelf digital cameras, such as the Kodak Z612, Kodak Z1015, Panasonic Lumex etc.
For starters I have chosen three examples: R Cas, R Cet and R Lyr. Three down, eighty-five to go!
[as of Nov. 07, 2011]