Centroid Error

Posted by Maxim Usatov on Sep 10, 2016; 6:50am
URL: http://astroimagej.170.s1.nabble.com/Centroid-Error-tp503.html

Hi All,

For some reason AIJ started to tell me this when I am doing differential photometry and trying to place apertures:
***ERROR: No signal for centroid in aperture T1 of image Calibrated-T18-blackhaz-WTF Star-20160828-020624-Ha-BIN1-W-300-001.fit.
********: Measurements are referenced to the non-centroided aperture location

There's star in the aperture. Exactly on the same image, yesterday, I was able to do this without problems. Nothing changed in the image. Tested on different images, I get the same error everywhere.

Any ideas?

Max