Re: I'm getting the wrong results when calculating the apparent magnitude for stars on astroimagej

Posted by karenacollins on Oct 19, 2024; 7:16am
URL: http://astroimagej.170.s1.nabble.com/I-m-getting-the-wrong-results-when-calculating-the-apparent-magnitude-for-stars-on-astroimagej-tp2542p2543.html

If the target star is saturated on the detector, then it will likely measure fainter than it really is. It would have to be quite saturated to come out 3 mags fainter, but we don't have enough information to go on to know about that. Could you try the same test using a target star (and all comparison stars) that are not saturated? If you are using Vmags from SIMBAD, be sure you are testing with your V-band images. You'd of course need to use Bmags for the B-band images.

Karen