Citizen Sky is now officially permanent part of the AAVSO. In the coming weeks we will be moving additional content to the AAVSO site and freezing this site as an archive of the 1st three years of the project. Please visit the new landing page for future updates.
Hello to all!! I have made a presentation of the procedure in IRIS to some friends but the argue that this procedure seems to confusing. One of them, that he is already active to the project and sending data to jeff Hopkins, told me that because of the small exposure time there is no great need for bias,dark,flat frames. So i went on to remove these steps and after many tests with our sample data and others I managed to simplify a little bit the procedure. So perhaps, this (http://www.citizensky.org/teams/dslr-documentation-and-reduction/iris-tu...) can be a beginner's tutorial and the one that we have now to become an intermediate tutoria (since we take into account more accurate steps).Perhaps, someone else can check this to see if it is correct. One point that still have not clarify is the adding of images. I see that both arithmetic and median works, but i suppose that median should lower the S/N. So is it better then to select only the arithmetic method?Regards,Grigoris