[Aavso-photometry] extrasolar planet photometry

[Michael Koppelman]

I'm wondering where the science is in this extrasolar planet photometry 
stuff. Are we interested in times of minima? Times of ingress and 
egress? Is it just a photometric challenge to test our skills? Are we 
looking for period changes, color changes, etc?

I'm just curious what our data will be used for in regards to the study 
of these sorts of (already discovered) planets.

Cheers,
Michael Koppelman
http://www.lolife.com/astronomy/