Eliminating Sky effects on Exoplanet Transit Lightcurve

Posted by kogbuefi on Jun 28, 2013; 2:44pm
URL: http://astroimagej.170.s1.nabble.com/Eliminating-Sky-effects-on-Exoplanet-Transit-Lightcurve-tp50.html

Hello!

 I have a question. I recently tried to plot a light curve of a transit the other day and it looks as though the effects of the sky is messing with the light curve of our target object. My professor, who I'm working with, suggested that we take the flux of the target object (exoplanet star) and divide it by one of the comparator stars to eliminate the sky effect. My only question is how do you do this on AstroImageJ?

-Thank You!