iraf.net

HiI'm working on a project to identify several stars via time series photometry and in order to increase the reliability of the photometric measurements I want to apply PSF-Photometry.
I've already done aperture photometry with daophot but now I can't find the correct parameters for PSF Photometry.
I followed the instructions very closely and tested several different parameter-sets, but a do not get even close to a good fit (except for when I choose only 1 star as reference and do photometry on only this particular star).
I'd hope, that someone could take a look at the image and give me some advise on the critical parameters...
Since this project is active research I would send you a link with a private message where you can download such an image.Any help would be very much appreciated, after a few days of testing I start to get desperate... cheers