Hello,
Thank you Randy and Karen for your answers I checked
http://var2.astro.cz/ETD/archive.php and
http://www.astrodennis.com/, both seem very interesting.
Randy : sorry no chance, just another guy ;-)
In the meantime I was finally able to successfully download WASP-12b from astro louisville, the data consists in 230 images. For the time being, I just inspected a few of them with astroimagej and other fits viewer (except ds9, because strangely these images make ds9 crash on my computer), they seem OK to me, the stars seem to be a little out of focus, is that for a better photometric accuracy ? I am looking forward to processing the whole set with astroimagej, I think this will be very exciting
Thanks again
Guy