Re: Extinction Coefficient

Posted by karenacollins on May 16, 2019; 1:14am
URL: http://astroimagej.170.s1.nabble.com/Extinction-Coefficient-tp1128p1157.html

The total ADU counts in aperture NN are given in the data column Source-Sky_TNN. I think you would need to know what absolute flux an ADU corresponds to for your telescope and camera. Alternatively, I think you would need to relate the Source-Sky_TNN counts to counts from another star for which you know the AB magnitude. I don't have experience using the AB magnitude system, so I can't give much guidance.

Maybe someone else on the forum is able to help?

Karen